I love it when people use technology for creative things that are outside of the uses that were originally intended. I was reading BoingBoing and saw a mention of the project Amsterdam Real Time by the Waag Society. It’s a cool project where volunteers carry around GPS devices that trace their movements around the city. The traces look neat. The Waag Society has also developed a Multimedia Cross Media Synthesizer programming language called Keystroke that I have to investigate sometime.
Other people are doing similar things. The GPS Drawing Project lets people draw on the surface of the earth with the tracing of their movements.
If you use any electronic devices such as bank cards or phone cards you leave your own electronic traces where you go. I’m fascinated with this stuff.