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24/07/2008

The Seattle Lindy Exchange is coming

The Seattle Lindy Exchange is next weekend, August 2-3. There is dancing all weekend but I wanted to mention one event in particular. Just like we did in Portland, dancers will be taking over a downtown square in the afternoon. If you want to see me (and others who are better than me) dance but you don't want to go to a ballroom, this might be a good opportunity. It's not a performance or anything that organized, just a bunch of Lindy Hoppers having fun. We'll be at Seattle's Westlake Plaza on Sunday August 3rd from 2pm to 6pm.

I'm moving

I'm not going far -- just to downtown Bellevue.
 
I started this blog over three years ago with stories of my house search and purchase. But for about a year now, I've been thinking about moving again, and I will finally do so next month. It's not that I've been dissatisfied with my house -- it fit very well with what I was looking for at the time, and it's been a setting for many good times in the last three years. Still, it feels like it's time for me to move on now, a little sooner than I would have expected when I bought the place.
 
But first, I'd like to point out that none of my reasons for wanting to move has anything to do with my recent... umm... house guest. Christina has been living with me for a little while now, but she has never expressed any discontent with the house or its location or neighborhood. While nobody has asked me directly, I'm sure they were thinking it or talking about it behind my back -- for the record this was completely my idea, and it was in my mind before I even met Christina.
 
Location
My main reason for wanting to move is that I've never lived in a "city" environment, and I think I might like to try it while I still have a chance, before I have a family which might make that less desirable. I grew up way out in the country, and then as an adult I've always lived in suburbia. Seattle is a cool city but it would be quite a drastic change for me and a horrible commute across the lake, so downtown Bellevue makes a good compromise. Bellevue, at least in the center, is no longer just a suburb of Seattle -- it's booming into a decent city in its own right. As numerous condo and apartment towers join the office buildings, it's even starting to develop something of a nightlife. Meanwhile it's still very clean and safe compared to the other side of the lake.
 
My current house is in a quiet neighborhood in southeast Bellevue where a 10-minute walk will get you to a park and a small grocery store, but not much else. I have to drive to do anything. In the last few years I've found myself driving to downtown Bellevue very often for shopping, restaurants, and entertainment -- wouldn't it be great to be able to walk to all those things?
 
The apartment building I'm moving into is the brand new Avalon Maydenbauer at Bellevue Way and NE 4th Street, across the street from Bellevue Square, Lincoln Square, and Bellevue Downtown Park. That is right in the middle of everything! And the best thing of all is it's on top of a new Safeway. I usually shop at Safeway anyway and having it just downstairs will be the ultimate convenience. My unit is on the second floor, directly above the produce section. :) I'm just afraid I'll be terribly spoiled if I ever move again.
 
Maintenance
My house is old: built in 1952 with only a few minor updates. It is a quality solidly-built house for its time, but it does have some things that are in desperate need of being remodeled, fixed, or replaced. That didn't bother me much when I was moving in because I’m pretty handy with tools and I thought I'd enjoy making some improvements. But it didn't work out that way. While I have made some very minor improvements, most of the big jobs that need to be done (like replacing the chimney/fireplaces and windows) would require help from a contractor and the expense would never be recouped when I sell the house. Even for things that I could do myself, I'm finding I don't have the time and energy that I thought I would. And then there's just normal household maintenance -- I can handle it, and I will when I live in a house again someday... but I'd really rather not deal with it right now.
 
Space
With my rommate moving out, that would leave me with a 3500sf 5-bedroom house all to myself and my significant other. While having a lot of space is cool, and it's been fun, I've discovered that the biggest thing it gives you is room to collect a lot of junk. I could get by with a lot less -- especially a lot less to clean. The apartment I'm moving into is not exactly small. It's actually pretty big at 1350sf and 2 bedrooms. It will force me to get rid of a lot of useless stuff I've accumulated, which is good, but it won't leave me really tight on space.
 
Finances
The one reason not to move might be financial. A house is supposed to be a good investment, in theory. Mine appreciated very nicely -- for the first year or so. For the last two years the value has barely changed, though fortunately it hasn't dropped. Maybe the housing market will pick up again in a few years, but I'm not going to wait for it. Meanwhile I might as well be throwing away rent instead of mortgage interest (and insurance and property tax and landscaping and high utilities and maintenance) for all the financial good it is doing me.
 
I made a big spreadsheet taking into account all the factors and variables I could think of, from the mortgage interest tax deduction to the opportunity cost of (not) investing all that money somewhere besides home equity. Unsurprisingly, what it all comes down to is a single variable that makes all the difference: appreciation. As long as houses in this area are not appreciating, I come out roughly the same whether I continue to own the house, or I rent (a fairly expensive apartment no less). If appreciation picks up again to 10% or more, well then I'd be far better off holding the leverage of a big mortgage.
 
And I certainly will own a home again soon enough. If I decide I like living in downtown Bellevue, then I might buy a condo in the area after renting for a year or two. Or if I don't like it, then I'll buy another house, though I don't know where that might be.
 
21/07/2008

I got an iPhone

If you've heard me make comments about Apple, you might have thought I would be one of the last people in the world to get an iPhone. I might have thought so too.

Ever since I had a few bad experiences with Macs back in college (late 90's), I have pretty much avoided and looked down on anything with the Apple logo. In the last couple years those annoying, misleading, and downright false Mac-vs-PC advertisements have only reinforced that tendency. On top of that, I can't stand the zealotry that Apple seems to inspire in many of ill-informed its users. And that branding strategy of putting a lowercase-i in front of any common word to make it their own? iHateIt.

But aside from their marketing I do have to admit that Apple has come a long way in the last 10 years. They have a real OS that runs on mostly-standard hardware components, their hardware engineering is very impressive, and they seem to be very in touch with what is important to mainstream consumers. So given all this I finally had to ask myself... Was I as big of an anti-Apple zealot as the pro-Apple flock I looked down on? Certainly not. :) But... was I being unfairly close-minded toward Apple? Probably.

When the original iPhone came out last year, I was aware of the hype but I mostly ignored it for its Appleness. Anyway that wasn't hard to do because while it looked slick, it had far less functionality than the phone I already carried. But the new "iPhone 3G" changed that in a few important ways: (1) I can sync my work (Exchange) email and calendar over the air. (2) 3G data speeds for fast web browsing. (3) The platform is opened up to 3rd-party developers to write new applications.

My overall impression after using it for 3 days is that it's clearly a leap beyond anything else currently available. You can be sure that competitors will be playing catch-up for the next couple years -- initially with some thin shells on top of the same old thing, but eventually with some real advances. Isn't competition great? You can read plenty of people's impressions on the web so I won't repeat everything, but I'll point out a few things that especially disappointed or impressed me. For comparison I've been using Windows Mobile phones for the last 3+ years.

Bad:

  • No flags in email. I rely on flags to track which emails I need to follow-up on. I'm still not sure what I'll do instead to track my important emails.
  • The unlock/home screen doesn't show upcoming appointments and unread message info. I have to unlock the phone and open the calendar app to see where and when my next meeting is.
  • No support for sending or receiving picture messages (MMS). Very strange for a device which is all about multimedia. Yeah you can use email as a substitute but only if the person you're sending to or receiving from has email on their phone.

Good:

  • The headphone jack works with ordinary headphones. This shouldn't even be worth mentioning except that many phone manufacturers persistently use proprietary connectors.
  • The screen is big and beautiful while the overall phone is still small. It can get VERY bright and is unusually readable in direct sunlight.
  • As advertised, the web-browsing experience (over 3G or WiFi) is remarkably great for the size of the device. It's the first phone I've had where I might use it to browse the web not out of necessity because I'm out somewhere, but just because I don't feel like getting up and walking over to the PC in the next room.

Support for 3rd-party apps means there is still a lot more in store for the iPhone. The SDK has only been available to developers for a few months and already there are some pretty cool applications. The user base of 3 million+ iPhones (and iPod Touches), combined with the store integrated into the phone in a way that makes impulse purchases VERY easy, will ensure that many developers will want to target the platform.

The one app I'm most looking forward to is a good e-book reader. Fortunately Mobipocket says they're already working on it. Also, I'd really like some kind of family-planning/calendaring solution. My girlfriend and I are both planners (her more than I) and we currently use calendar.live.com which has some really nice sharing features, but it isn't accessible from a phone. A rich integrated multi-calendar implementation from Apple would be ideal, but a 3rd-party app could get most of the way there. At that point I think I'd have to get her an iPhone too.

11/03/2008

Portland Lindy Exchange

This past weekend I drove down to Portland, Oregon for the Portland Lindy Exchange. A "Lindy Exchange" is a type of big swing dancing weekend event hosted by various cities around (and outside) the country. It's basically an excuse for lots of out-of-town dancers to converge in one place to meet and dance with everyone else. There are typically no classes or workshops -- just big dance floors, great live music, and more DJ'd music late into the night. This was the first exchange I've been to, although later this year I plan to also go to at least the ones in San Francisco, Vancouver, and of course Seattle.

I'll spare you all the boring details and stick to a couple of the highlights. One neat part of the weekend was dancing in Pioneer Courthouse Square on a sunny Saturday afternoon in the middle of the city with lots of people watching. This was one of the planned events so there was a DJ and sound equipment there and plenty of others to dance with. I've never before danced outside in broad daylight, or had a large audience of non-dancers like that, and it was kind of fun to show off.

Another cool experience was the venue for Saturday evening. The Crystal Ballroom, in addition to be gorgeously decorated on the inside, has the most amazing floor I've ever danced on. While a typical hardwood dance floor will have just a bit of spring to it, the wood floor at the Crystal is actually floating somehow on mechanical springs. It almost feels like dancing on a trampoline, where you can feel others stepping and bouncing around you. It's actually a bit distracting at first, but when you get used to it it seems to give the whole place a unique kind of energy. Also, I really enjoyed the last band that played there, Coucou Bleu.

30/01/2008

Vancouver trip report

Sorry it's been a couple weeks, but I did promise you a report...

On Saturday morning I took the express bus into downtown Seattle and got off at King Street Station. It was a really nice train station... 100 years ago, but the years of neglect definitely show. They're trying to restore some of the original finishes now, but it will never return to its former glory -- especially with the new Link Light Rail line stopping at nearby Union Station instead.

Anyway, the station served its purpose well enough, and I got on the Amtrak train which left on-time at 7:40am. Overall, my impression of the train ride was... not bad. The seats are big and comfortable with plenty of legroom. The upper level of the central car (of three) of the train has floor-to-ceiling windows with unreserved seating facing outward, allowing some decent views of the coastline of northern Puget Sound. However I spent most of the time sleeping or reading. (Fortunately I don't have any problem with motion sickness from reading on a train or plane, though while riding in a bus or car I get terribly nauseous from reading nothing more than Trivial Pursuit cards every few minutes.)

Once we got out of the Seattle metro area, which admittedly takes a while, the train actually moved pretty fast: the GPS on my phone measured it at 77+ mph at multiple points along the way. I thought we were going to arrive nearly on time in Vancouver until the train stopped for about 15 minutes just before the bridge over the Fraser river into the city. We had a similar stop before that bridge on the way back, when they announced they had to pick up or file some paperwork or something before crossing the bridge... which doesn't make sense... and anyway couldn't they take care of that stuff ahead of time??

So the train finally arrived at the Vancouver station just before noon, about 20 minutes late. Fortunately the customs process was fairly quick. (It's always easy to get into Canada.) My first swing class, starting at 12:20, was a 15-minute walk away. I walked into the studio with just enough time to put on my dance shoes before the class started!

I thought the series of swing and related classes on Saturday and Sunday (8 hours total) were mostly very good. I polished up some of my basics and learned several new moves and techniques that will definitely stick with me. And I had fun dancing with a lot of new people, as well as a few that I sort of knew who were also from Seattle or had visited recently. There was a great band for the Saturday night dance at the Grandview Legion Auditorium. While that venue doesn't quite compare to Seattle's Century Ballroom in size or atmosphere, it was a fun night, and Vancouver clearly has a decent Lindy Hop scene.

After the dance Saturday night I took the nearby SkyTrain to my hotel and got a good night's sleep. After checking Sunday morning I had a few hours to kill so I took the SkyTrain into downtown Vancouver and walked around the waterfront and shopping areas. From that perspective it seemed like a nice and pedestrian friendly downtown. It's clear the city is doing a lot to prepare for hosting the 2010 Winter Olympics. (While all the snow sports will be up at Whistler, I guess Vancouver is really the "host" city.) Among other things, there's a huge new convention center under construction, and a major shopping street in the middle of downtown is a big long hole where they're building a new (misnamed?) underground SkyTrain line to connect to the airport.

From downtown I took the SkyTrain back to East Vancouver where the classes were that day, then after classes I took the SkyTrain (see a pattern here?) back to the train station and caught the 6pm train back to Seattle.

I slept most of the way back. The only annoying part of that train was U.S. customs. We had to go through customs before boarding the train. Fine. But then the train stopped at the border while customs agents went through the train and questioned everyone and checked passports again. Of course for me it's never a problem since I look like an ordinary white American and I'm gainfully employed and I don't mention the fruit and livestock I'm not transporting back into the states. But it takes a little while for the two agents per car to get through everyone. Still, it looked like a much longer wait by car to get into the U.S. (The train tracks are adjacent to the Peace Arch I-5 border crossing.)

My train arrived at the Seattle station at around 10:15pm, only about 10 minutes late. But my weekend was not over yet! Sunday night is swing night at the Century Ballroom, and there was even a live band playing that night! Now well-rested, I hopped on a bus to Capitol Hill and proceeded to try out my new moves and dance the night away.

11/01/2008

Train to Canada

I'm taking the Amtrak Cascades train up to Vancouver, BC for a weekend of swing classes and dancing. There's a special series of Lindy Hop workshops held by some famous instructors there this Saturday and Sunday, along with a great swing band playing Saturday night. Conveniently, all venues are within walking distance from the Vancouver Amtrak station, so I can make it a car-free trip! And the Vancouver SkyTrain is right there too, which should give me a chance to explore the city a bit during a few free hours on Sunday morning.

The Amtrak tickets cost me about $20 more than I would have paid for gas to drive up there, and it will take about an hour longer (4 hrs vs 3 hrs, including stops and border-crossing). But I expect it will be worth it just for the stress-free comfort -- I can sleep, read, watch the scenery, or get up and stretch my legs any time.

I've never taken a trip by rail in North America before (beyond metro transit systems), so I'm curious to see what it's like. If I like it, I may take future trips like this to Vancouver and Portland. I'm sure it won't compare though to the speed and convenience of the trains I experienced in Japan.

I'll post a full trip log when I get back.

03/01/2008

The PRO Club Performance Center

The PRO Club (huge Bellevue gym where I am a member) just opened their new Performance Center this week. It's 2 miles down the road from the main gym, in the opposite direction from my house but still not all that far away. Anyway I'm a little bit curious to check it out, and maybe try out the "sports conditioning" sessions they're promoting. Have you been there? What do you think?

The reason for my interest is that I've been quite amused and impressed by my own modest athleticism over the past couple years. It's not vanity if you understand that I was never athletic at all throughout high school and college. It was only about 2-3 years ago that I started getting more seriously into racquetball and ultimate, and now a lot of my friends and co-workers and sometimes teammates seem to perceive me as a very athletic person, which is really a new and strange identity for me.

Still, I've never trained much separately from just playing sports (a lot), and now I wonder, could I take it up another notch if I actually did put in some real, dedicated training time? I figure if I ever want to find out what I'm capable of, now is the best time to do it, before I get any older.

One reason for hesitation at the moment is that I usually try to avoid the throngs of uncommitted resolutionists that crowd the gym during the first few weeks of every January. But maybe the Performance Center would be more sane than the main gym.

My house is green

Starting this year, 100% of the electricity consumed by my house is coming from renewable sources, via Puget Sound Energy's Green Power program. I truly believe in renewable energy sources, so I figure I'd be a bit hypocritical if I didn't use green power myself when PSE makes it so easy. Of course, it does come at a slight premium over that ugly black power that most people settle for: I expect my electricity bill to be around 14% more. That's reasonable for now, though it might not be too long before fossil fuels surpass that cost anyway. (And I do trust that I'm actually getting what I pay for.)

Curiously, hydro is not included in the list of green power sources. In case you didn't know, nearly half of everyone's electricity in this area already comes from hydro. While I would consider hydro to be renewable as long as it keeps raining here, I guess there has been a lot of backlash in recent decades about the environmental impact of damming up rivers.

The only thing in my house not powered by electricity is the central heating, so in the winter months I'm still burning dead dinos. While efficient electric heat pumps are pretty suitable for the mild climate here, it isn't practical to replace my furnace now since it's only a few years old.

Oh, and while my car still runs on gas too, there's not much I can do about that until my Tesla arrives.

18/12/2007

Lindy Hop Musicality and the Seattle Swing Scene

I last blogged about my swing dancing passion about four months ago. Since then, I've gotten into it more than ever. Especially this month, I think my dancing prowess has improved phenomenally. While I have been taking more lessons and workshops, it's mostly because I've been going out dancing two or three times a week recently. After dancing enough to become comfortable leading all the different moves that I've learned in classes for the past year, I'm gradually discovering an ability to go far beyond the simplicity of just stringing together the class moves in random order.

Apparently, dancing is better when done to the music -- who knew? Okay, everyone knows that, but to a beginning dancer it's really hard to actually listen to the music while at the same time thinking about all the other things you need to do to make the dance work. More than anything else, the ability to listen to and interpret the music in my dancing has made me feel like I've moved beyond being a beginner. While it helps that I've heard the more popular songs in the genre a few times now, some predictable patterns can even be pulled out of an unfamiliar song by an attentive listener. (My musical experience and music theory education from high school helps a little too.) It can be as simple as doing some slower slinky moves during the more mellow parts of a song, and throwing out big flashy moves for the crescendo. And while I can't get it right every time, it feels really great to hit a big accent or "break" in the song with a corresponding dance move -- and to lead my partner to do it with me!

Recently, I'm also starting to experiment with interesting footwork and other variations that fit in between or in the middle of other moves. Lindy hop as a dance style is very influenced by the improvisational spirit of the jazz music it is danced to. (Swing music is related to or a sub-genre of jazz.) So playful variations and improvisations around the basic structure and style are highly valued. Maybe this is somewhat true for other dance styles, but I think even more so for lindy hop. Anyway, some of my experimental moves work and I remember them for later, and some of them don't and I just keep on dancing. I think certain patterns and preferences I use now are starting to give me my own distinctive style which, I hope, will help me stand out in small ways from the other leads. I know there are still a lot of things I can improve on though.

I've never been a socially precocious individual, so you may find it a bit strange that I would choose to go hang out with a bunch of strangers all the time. Maybe that aspect was a bit uncomfortable to me at first, but it mostly doesn't feel like that anymore. Because when you see, and dance with, the same strangers every week, they're no longer strangers. While I can't say I've made any close friends yet, I have gotten to know several people reasonably well (mostly women, for obvious reasons). When I walk into, for instance, the Century Ballroom on a social dance night, I feel right at home and it's great to see and be greeted by all the familiar faces of the other regulars. The whole swing dance community is very friendly and welcoming. I didn't have that experience at all when I used to go salsa dancing in previous years.

It's very nice that a there are a lot of swing dancers around my age. This is true not only in the Seattle scene but across the country, and it's partially due to the great swing revival of the late 90's, which was right around our college years. (If nothing else, you may remember the famous Gap 'Khakis swing' commercials, or the movie Swingers, from that era.) Back then, neo-swing bands like Big Bad Voodoo Daddy and The Brian Setzer Orchestra became phenomenally popular, and lots of college kids took up swing dancing. I remember when Rich, a college friend/roommate, got into swing dancing in Saint Louis during that time, and he's still at it. Sadly, I wasn't convinced to join him at the time, but now I know what I was missing. Anyway, while swing today is not nearly as big as it was a decade ago, there is a good-sized community of dedicated people who mostly started in college back then and have continued to bring in others around their age, as well as introduce the dance to a slightly younger crowd.

So there are a lot of college-age dancers too, at least at the weekly Century all-ages dances on Sunday nights. Some of them can dance pretty well, though it seems like there's a constant cycle of young newbies who try it briefly and don't stick with it. Once I got beyond the point where I felt like a newbie myself, I used to not enjoy dancing with follows who didn't really know what they were doing. However, as my skills and experience improved further, my attitude on that has changed. I've found that as long as my partner knows the absolute basics, I can lead a variety of simpler moves well enough to really show her a good time. On the slower songs, I might even be able to throw in enough slinky musicality in there to make her nearly swoon! :) Yeah it's a bit of an ego boost, but also if that helps to convince more follows to stick with swing dancing, I am doing my part to bolster the community -- and I'm tipping the lead/follow ratio just a little bit in my favor. Sure it still feels great to dance with the good dancers (although it can be intimidating if she's a local superstar), but variety is also good so there's no reason for dance snobbery.

I'm afraid I have to admit that if I was talking about dating, college girls might be getting a bit too young for me. With the reality of me being in my late-late twenties now, they might be a full decade younger than me! Wow, I don't feel that old. And actually, they probably don't think I am either. I've been told before that I look a few years younger than I am, and several times this year I've been asked if I go to college around here. What do you think -- am I that young-looking? While it might have been annoying when I was 21 and looked 17, I don't think I'll mind any more.

Dancing is not dating though -- I can have fun with a broad age-range of partners. While the prospect of finding a date with someone who shares a common interest is a nice side-benefit of the activity, it's not at all what keeps me coming back for more. There have just been so many nights when after several hours of dancing (and a bit of socializing mixed in), the music stops and the lights come up, and I think, wow, I had such an awesome time tonight, and it ended too soon, and when can I come back and do it again?!

16/12/2007

Banishing the garage door poltergeist

Those of you who visited my house during the first year I lived here may recall that my garage door would occasionally open and close for no reason at all. Sometimes I would even come home to see my garage door wide open, inviting anyone to freely walk into my house. I wasn't too worried given that I'm in a very quiet cul-de-sac with only my one neighbor ever driving by, but still it was a little disconcerting. Finally that stopped happening about a year ago, around the same time the button on the wall in my garage stopped working. I didn't really need that button though as I usually use the remote in my car, so I didn't worry about fixing it at the time.

Then about a week ago my garage door stopped responding to any commands to open or close. Finally this weekend I got out my handy multimeter to investigate. I found one of the safety sensors at the bottom of the door wasn't getting any power, causing the garage door opener to think there was constantly something in the way, so it would refuse to move the door. The switch on the wall wasn't getting any power either, though the voltages all looked good at the connections to the opener unit. Most likely a loose connection in the switch wiring had been the cause of those random door movements, then that loose connection eventually disconnected altogether.

I actually know how things got into this state. When selling the house, the previous owner had new drywall installed in the garage -- one of the cheapest, sloppiest drywall jobs I've ever seen. I guess the quality normally wouldn't matter much in a garage, except that here they hid the garage door opener wiring behind the drywall, then managed to drive a screw through the wiring or something else to nearly break it, in two places no less.

Fortunately, rewiring things is something of a hobby of mine! This morning I ran new wire to the switch and safety sensors, and now it's all working fine. It's very satisfying that a little bit of effort, along with some tools and and trivial applied knowledge of electronics, allowed me to cheaply fix a problem that has been annoying me for two and a half years.

03/11/2007

Joss Whedon to do a new TV series

And it will be on FOX!? Has he forgotten what they did to Firefly?? Admittedly, Joss does sound in interviews like he is not getting his hopes up too high just yet.

The new show will star Eliza Dushku (the scene-stealing other slayer from Buffy), and will also involve Tim Minear (writer/director/producer from Angel and Firefly). So I wouldn't be surprised to see at least a few guest appearances of other past Whedonverse denizens, since you know, they're like one big family.

The project is (tentatively?) titled Dollhouse "because that's the nickname of the high-tech lab where a group of human chalkboards are kept between assignments. Human chalkboards?! Yes! What else would you call characters like Dushku's Echo who can be given new memories, skills and even personalities, then stripped of them just as quickly, leaving them virtual children?"

If all goes well, Dollhouse is set to premier on FOX in the fall of 2008.

Read more at TVGuide.com, or the show's premature fan site which seems to have coalesced overnight out of the hopes and dreams of browncoats and Whedon worshippers everywhere.

20/09/2007

$1 US == $1 Canadian

The exchange rate for the two currencies hit 1:1 today.

Wow. Last time I was paying attention, a Canadian dollar was worth something like 80-85 cents in US currency. But in the past few years, the US dollar has been steadily weakening, while the Canadian dollar has been getting stronger.

Contactless payment security

In yesterday's blog entry, I wrote about contactless payments. I promised to follow it up by addressing security and privacy concerns you might have about the system. I'll start with security.

There are basically two results a malicious attacker might want to achieve by exploiting the contactless nature of this kind of payment system:

  1. To make charges to your account at the attacker's "store" without your knowledge or consent.
  2. To surreptitiously steal your credit card number for later use to make purchases with your account or otherwise impersonate you.

Unfortunately for the would-be criminal, and fortunately for you, the first attack is ineffective, and the second attack is impossible! Why?

It might not be what you're thinking. We should ignore the helpful restriction that the super-low-power communication requires the RFID chip to be within a couple centimeters of the reader, so it would be difficult for someone to activate it without you noticing -- maybe you're on a Tokyo subway car at rush hour and it's perfectly expected to have strange people and things pressed up against you on all sides. Also, let's even put aside the fact that all the RF communications are strongly encrypted -- maybe the attacker has a device that can trick the payment token into thinking it's a valid merchant, allowing it to participate in the encryption.

Credit card companies provide two very simple mitigations for attack #1 above. First, any reputable card-issuer does not hold consumers liable for fraudulent charges (often this is enforced by law). And second, any merchant with many reports of fraudulent charges is very quickly going to have their credit card acceptance privileges revoked, probably before they even receive the funds. Although this does not absolutely prevent a very determined troublemaker from briefly hassling somebody, there will probably be plenty of information for the police to easily track down and arrest that troublemaker. So in practice, this is never a problem as far as I've heard. (Things get more difficult for a consumer who intentionally makes a purchase from a merchant who then doesn't deliver on the promised goods/services -- but that is a different kind of attack, and not really credit card fraud because the account-holder approved the transaction at the time it was charged.)

As for attack #2, it is foiled by a design that ensures the RF communications never even include an account number, nor any number that is ever usable outside the current transaction. The full explanation requires an understanding of public key cryptography, but conceptually you can imagine the tiny computer chip in the payment token is generating and transmitting a single-use credit card number for each transaction. Credit card companies have issued single-use credit card numbers upon request for about a decade, primarily for users who are concerned (paranoid?) about making purchases online. Only the credit card company can link a single-use number back to the real account number that it was generated for. Contactless transactions are actually a bit more complex, but this should give you an idea of how the payments can be made without ever exposing your account information. So even if an attacker is able to eavesdrop on the transaction data, they won't see any useful information.

Most credit card fraud today occurs when a (soon-to-be) criminal somehow obtains your credit card or credit card information (name, number, exp date), then goes on a shopping spree. This can easily happen when a waiter takes your card away out of your sight, when a cashier "forgets" to hand the card back to you after swiping it, or maybe even if the person behind you in line at the checkout manages to snap a photo of your card. But contactless payment systems are not vulnerable to this form of fraud at all! Because you don't ever have to give up possession of the payment token, and it's not readable by a human, in this way you can consider contactless payments more secure than an ordinary credit card.

Of course, if you manage to lose your payment token, it is possible for the finder to go on a shopping spree just like with a normal plastic card. So you still need to report it to your bank so they can block it.

If I sound like I know what I'm talking about here, it's probably because I do similar (but much more formal) security analyses for software all the time, after having had lots of training for that task. Now, I must admit I'm far from an expert on RFID payment systems, but at least I can still manage to sound like I know what I'm talking about.

Coming soon, I'll take a look at the privacy issues.

19/09/2007

My phone is also a credit card

Why must I carry a wallet? Paper money is a cumbersome. Physical identification is easily forged. Supermarket club cards are the most annoying thing -- if they must track my shopping habits, can't they recognize me by the credit card I use? And then there's the unnecessary key ring with metal keys?? Those archaic mechanical locks are so weak they're just begging for a more secure, convenient, and modern alternative.

There is only one thing that I can accept that is worth carrying with me everywhere: a smart compact digital device that identifies me and connects me to the rest of the world. It is my mobile phone, and it should be so much more. (Until I upgrade my neural implant to support wireless networking.)

At the very least, I should be able to buy things with my phone instead of a credit card. People in Europe and Asia have been swiping their phone at the retail counter for years, so why are we so far behind here in the USA? Well, contactless (RFID) payment systems are finally being rolled out here by Visa, MasterCard, and AmEx, though they're slow to catch on due to a chicken-and-egg problem: hardly any consumers carry contactless payment devices because very few merchants can accept them, while merchants aren't interested in setting up the contactless readers when nobody will use them. We need more cool applications like the NYC subway trial to get contactless payments into the mainstream.

Several American credit card issuers will now give out contactless payment devices on request. Some provide an otherwise normal credit card with an integrated RFID chip, while others issue a separate token of some kind. My primary credit card is a Citi MasterCard, and for it I was able to request a "PayPass" device.

paypassfob

Citi sent me a big blue plastic fob meant to go on a key ring. I hate having a big jangly key ring, but that's okay because I never intended to keep the fob there. Instead I very carefully destroyed it. The plastic case of the fob was pretty thick and strongly welded together, but some tough Cutco utility scissors made short work of it. The functional part is actually just a small sliver.

paypasschip

The actual RFID chip isn't visible in this photo, but it's only about 5mm square and 1mm thick. Most of the blue area is a thinner plastic piece that just holds the surrounding RF antenna wires.

Now, I could just stick this sliver in my wallet, so that I can swipe my wallet in front of a contactless reader to make a payment. But as I explained above, my phone is really the proper place for it. Besides, my phone is more easily accessible than my wallet. And there's a good chance I already had it in my hand because I was checking email while waiting in line at the checkout counter!

paypassphone 

I was just barely able to fit the RFID sliver underneath the battery cover on the back of my T-Mobile Dash. Now I can swipe my phone in front of a MasterCard PayPass reader to pay for things! I wonder how many funny looks I'll get from cashiers...

If only the places I shop had PayPass readers. Around here only a few chain stores have them, most prominently Tully's, McDonald's, and 7-11. I don't drink coffee or eat fast food burgers, nor am I a fan of slurpees or any other junk food at 7-11. Maybe if 7-11 sold something really cool, I might stop in... Oh. Awesome.

Anyway, I'm sure there will be more PayPass locations soon enough. How about some gas stations? They pioneered contactless payments in the U.S., but now that regular credit cards are doing it I'd rather not have to maintain a separate account.

Now, some paranoid readers may be eager to bring up concerns about the security and privacy of electronic contactless payments, compared to regular magnetic-swipe cards or paper money. In a future blog entry, I'll explain why security is basically not a problem for consumers today, while privacy/anonymity is a problem that could easily be solved if only the industry was motivated.

12/09/2007

Hacking light fixtures for fun and carbon reduction

When I first moved into this house just over two years ago, the great room in the basement had some really dim and dingy light fixtures. So I replaced them with some simple round incandescent fixtures. But I was never really satisfied with those, for several reasons:

  1. They stuck out too much from a ceiling which is already slightly lower than normal.
  2. They directed too much light to the sides, impacting the projection picture too much.
  3. They were not individually controllable -- all six were on the same dimmer switch. I often want to leave the front two lights off to avoid washing out the projection screen, while still lighting the rest of the room.
  4. They used too much energy. 6 x 100 = 600 watts just to light that room. Ouch!

With the latest upgrade, I've managed to solve all of these problems!

  • I had to go with fully recessed fixtures to solve problems 1 and 2. The challenge there is that the original holes were in an odd size (10" square) that nobody uses anymore. (The house was built in 1952, and I'm pretty sure the fixtures I removed two years ago dated from that era.) Recessed florescent fixtures come in certain standard sizes, from which I chose 1' x 4'.
  • The original fixtures were all wired to the same switch, but I wanted to control them separately. Insteon let me do that, by directly hooking up hidden Insteon switches to each new light fixture, and hard-wiring the original switched wires to ON.
  • For efficiency I considered both florescent and LED lighting. LED is much more efficient even than florescent, but the problem is household LED lighting costs a lot if you want something bright (though it is slowly getting cheaper). Florescent is cheap and moderately efficient, but it's not dimmable which makes it unsuitable for a theater room. I ended up going with a hybrid solution.

Of course, you can't just buy a hybrid florescent-LED recessed fixture with integrated Insteon switches off the shelf. So I built my own by cutting up, drilling, rewiring, and generally hacking a standard recessed florescent fixture. I'm very pleased with the result, which is why I'm showing it off. Here's a photo of one in my basement ceiling, with the cover open and hanging down.

florledfixture

(No, it's not actually warped, that's just distortion from the camera.)

On the two ends, you can see the two integrated Insteon switches which are easily accessible with the cover open, but invisible with it closed. The one on the right controls the two small dimmable LED floodlights (currently on), and the one on the left controls the florescent tubes. The custom wiring, extra bulb sockets, and florescent ballast are hidden underneath the raised bulge that goes down the middle.

The two LED floodlights use only 3W each, but together they put out about as much light as a 45W incandescent bulb! That's certainly not enough to brightly light the room -- the florescent bulbs serve that purpose -- but it's some nice moonlight for when the projector is on. Actually I'll leave at least a pair of the LED lights on all the time to prevent the basement from being a dark cave. I used to leave a 45W bulb on down there all the time, but now this will save me a continuous 39W. At that rate, the LEDs will pay for themselves in... about 2 1/2 years. Since LEDs last halfway to forever, in this case they're easily worth it without even counting the green factor.

The biggest problem with this whole design is the amount of time it takes to do the custom modifications. Did I mention I've only done one out of six so far? Now that I know exactly what I'm doing it should go a little faster, but still, it will probably be a while before I get all six of them done.

For the one, the scary part was cutting the big hole in my basement ceiling. I used a powered reciprocating saw, and got the hole pretty close to correct. There are some very small gaps and chips in the plaster on one side which aren't very noticeable and can be touched up with spackle.

The really hard part was getting the thing mounted up into the ceiling... by myself! Saeed wasn't around, and I was impatient to get the job done. It's not terribly heavy, but I just didn't have enough hands to hold and screw at the same time. But I somehow managed it, without doing anything stupid or dangerous.

21/08/2007

Lindy Hop!

I originally learned a bit of swing & lindy hop dancing about 5 years ago. That was, I guess, right on the tail end of the great American swing craze of the late nineties. I remember that it was starting to be fun, but I never really learned enough to feel comfortable social-dancing. More recently, last year I took a lot of salsa lessons. Salsa is really popular these days, at least around here, and several of my friends are decent salsa dancers. Now and then I would go to social salsa dances either with friends or on my own. I was reasonably good at it, but I was never really passionate about it.

Starting last fall, I decided to give swing another chance. I took several lindy hop lessons with Julie, starting over at the beginning. While she suspended lessons this spring -- and moved away :( -- I have kept at it. Allow me to boast, now, that I'm getting pretty good at it. I know all the basics and a good variety of moves and variations, so that I can spend a lot of time on the dance floor without too much boring repetition. Now and then I get compliments for giving a solid lead. While I might know enough to seem impressive to a swing newbie, I'm very far from some of the outstanding dancers. I'm having tons of fun, I'm hooked, and I want more!

I've been going to social swing dances at the Century Ballroom nearly every week recently. While I have fun going on my own and find plenty of nice people to dance with, it would be cool if I had some friends to go out with sometimes. There are a few people I sort of know because I've danced with them a lot and talked a bit, but I haven't found a group to really hang out and go out with. So if you're reading this and you're looking for a fun, active, social activity, give swing a try! I assure you that anyone can do it! (And it's more fun than salsa, trust me.) I'll even offer free lessons; I'm sure I could do a decent job of teaching the basics now.

Last night at the Century was a blast. There was a great live swing band, so there was a good crowd of skilled dancers. Besides my own modest dancing, I witnessed an impromptu performance of the Big Apple by about three dozen people. The Big Apple is a famous choreographed group routine done to a certain song, with movements that are mostly not quite swing but derived from it. I'd seen it on videos before but was very surprised to see that apparently all the good swing dancers know it well. Then afterward some of the best dancers showed off with some crazy moves and arials, all unchoreographed but no less impressive than this video, which starts out similar to the Big Apple but will quickly have you saying "wow". Yeah... I'm not quite there. Yet.

Portrait of... me?

The Jargon File is a well-known concise description of hacker language and culture. It's been around a while and I've browsed it before, but I happened to stumble across it again today. Some of the content is a bit obscure since it dates back a couple decades or more. But perhaps the most fascinating and continually relevant section is the Portrait of J. Random Hacker. (You do know what a hacker is, right?) Many of the descriptions are eerily accurate when applied to myself -- much more than any horoscope could ever be. Until I read the Jargon File a few years ago, I didn't quite realize how much I conform to the nonconformist hacker nature.

Of course not everything can be completely on the mark. But there are a surprising number of striking examples, including...

Dress: "A substantial minority prefers 'outdoorsy' clothing"

I think around 90% of the clothing I wear comes from REI.

Sports: "Interest in spectator sports is low to non-existent; sports are something one does, not something one watches on TV."

Absolutely.

... "Ultimate Frisbee has become quite popular."

My favorite sport!

... "Martial arts in the hacker culture deserves special mention."

I've dabbled in a few martial arts and always wanted to do more. I've been planning for a couple years now to take up aikido more seriously, but I just don't have the time to add another frequent activity to my schedule.

Food: "Ethnic. Spicy. Oriental, esp. Chinese and most esp. Szechuan, Hunan, and Mandarin (hackers consider Cantonese vaguely déclassé). A visible minority of Southwestern and Pacific Coast hackers prefers Mexican."

Mmm... Mexican, Japanese, and Chinese food are indeed my favorites. But as it says, I never much cared for Cantonese (once I figured out the difference).

Communication: "Though hackers often have poor person-to-person communication skills, they are as a rule quite sensitive to nuances of language and very precise in their use of it."

I constantly find myself cringing when my co-workers (mostly the non-hacker ones of course) repeatedly miss-apply or miss-speak colloquial phrases. Some of them even grew up in this country so they should know better. And in some cases those misuses seem to catch on and grow into a widespread meme, annoying me to no end. Personally I almost always avoid silly colloquialisms and just say what I mean.

... "They are often better at writing than at speaking."

Well, I try. If my writing is bad, my speech must be horrid.

Personality: "Also, most hackers are ‘neophiles’, stimulated by and appreciative of novelty (especially intellectual novelty)."

Old stuff is obsolete. People who resist good changes for the sake of familiarity or pointless tradition annoy me.

... "Hackers are ‘control freaks’ in a way that has nothing to do with the usual coercive or authoritarian connotations of the term."

I insist on driving a stick-shift. I wired my house with programmable light switches.

Misc: "Hackers are more likely to have cats than dogs."

Check.

"Richer hackers drive spiffy RX-7s..."

Oops, an off-by-one error! Obviously the Jargon File needs to be updated for the current decade.

"... and then forget to have them washed."

Guilty.

---

Lots of other things there are not far off, but I may not be prepared to admit everything. So, for fellow hackers, does much of this ring true for you? As for everyone else... just know that we do not envy your normalcy. :)

20/08/2007

Gated community?

I live in what could be considered a small cul-de-sac with three houses. Except I guess it's not really a cul-de-sac since it isn't a city street, but a shared private driveway.

My two neighbors now want to put up a gate at the entrance to the driveway. You know, one of those pretentious motorized gates you might see guarding an expensive estate or "gated community". With connections to the fences on either side of the entrance, the entirety of our three properties and driveway would then be enclosed.

Of course they're not going to do anything unless I agree. (I technically own the whole driveway anyway.) But I feel a little bit pressured into going along with it, and I'm not sure how I feel about the idea of a having a gate there.

Their primary motivations are safety and privacy. I think the main reason this idea came about is we actually had a stolen car abandoned in our driveway a few months ago. It took a little while before we realized it was abandoned, since we each assumed it belonged to one of the other houses. And, there are a few lower-income apartment complexes around, which I suppose may make some people uneasy. But still, I consider this area a relatively safe neighborhood, as good or better than most parts of Bellevue. Anyway I don't think there are any 'bad' parts of Bellevue; it's nearly all yuppie suburbanites from end to end.

I'm not sure exactly why I'm uncomfortable with the idea of having a gate. It shouldn't be inconvenient for me, since I'll have a remote control in my car -- just another button to press in addition to my garage door control. But it might be a little inconvenient for friends who come to visit. There would have to be a button or call-box or something to let visitors in.

A gate, if done well, could probably increase my property value by quite a bit. With the three neighbors splitting the cost, I'd probably get out more than I put into it. That is the biggest positive factor for me, since there's a good chance I'll want to sell my house after another 2 to 7 years.

So, if you come to visit my house, what would you think about a gate there? Too pretentious? Any factors I haven't considered?

12/08/2007

Coon meets coon

Merlin made a new friend.

Last night around 1:30am I heard a loud ruckus in the vertical blinds of my back patio door. (Fortunately since it was a Saturday night I was still up -- in fact I'd just gotten home.) Usually this noise means Merlin has gotten excited because a neighborhood cat has come around to say hello. But this time, my Maine Coon met another kind of coon.

Coon meets coon (1) Coon meets coon (2)

This was a very bold and curious raccoon, because he didn't back off at all when I came up to the window and started snapping pictures with the flash. At first, both cat and coon took aggressive stances, hissing and clawing at each other through the window. But after a few minutes, they sat down and just stared at each other for at least a half hour. Merlin even started purring!

07/08/2007

Who is googling me?

This post may be a bit self-centered, but hey, this whole site is all about me, so whatever...

One of the features of Windows Live Spaces allows me to see how people get to my site -- that is, the address of the web page where somebody clicked a link to get here. It only shows history for the past day (more would be nice), but I'll check it now and then just out of curiosity.

Besides links within my own blog, direct navigation (people typing the address or using a bookmark), or RSS, the most common ways people get here seem to be:

  1. Links from other people's blogs. Okay, completely normal and expected.
  2. Links from random search engine terms. It's interesting to see which of my posts generate traffic from a search engine and for what keywords. The most common hits seem to be in my entries about my travels in Japan or random technology topics. And the strangest thing is, more often then not they come from a particular Chinese search engine.
  3. People directly searching my name. This blog comes up as the first result for most search engines when querying my first and last name, as it should. (My last name is unique enough that there isn't another "Jason Ginchereau" out there -- or if there is, he isn't anywhere on the net.)

What I want to know is, who is googling me? Now, I really don't mind. Certainly nothing I post here is intended to be private. And while you can find where I went to high school and college, various software projects I've worked on, as well as where I work now, you won't find anything bad about me, because really I've got nothing to hide. Anyway I'm just curious... who is looking for me? Are there old friends or family looking me up? Coworkers digging for dirt? Do I have a stalker?

In certain cases, I have my suspicions. If I give my name or send an email (which has my full name in the from field) to a new friend, acquaintance, or date, I might notice something like this in my blog visitor statistics the next day: http://www.google.com/search?q=Jason+Ginchereau. I don't check often, but I have noticed this pattern more than once. So if you're reading this, you may have already been detected! But don't worry, like I said I don't mind. I'll just have to google you back, then we can be openly even.

Anyway, if you got here by googling me, why not let me know? Send me an email, or add a comment below. Feel free to be anonymous, if you must.

Do you habitually google your friends/dates/coworkers/etc? Oh go on, admit it. Apparently everybody does it, even though nobody really talks about it. How do you feel when you know somebody googled you?