Smart Clothing

Discussion is taking place on the smartclothing mailing list.

Katie dissolved one of her SmarTrip cards, and so did Q, giving us a couple of RFID chips that we'd like to hook up to antennae and eventually integrate into something wearable—perhaps a patch or cuff. According to our understanding, the SmarTrip card is an ISO/IEC 14443 Type B card that has a 13.56 MHz operating frequency, 10 cm operating distance (under optimal circumstances), and 106 kbps data transmission rate. This antenna matching-circuit calculation (link not working) and this 13.56 MHz RFID systems and antennas design guide may prove useful.

I wonder if you could work one of those RFID chips into a ring or a cufflink... --The Doctor

Trossen Robotics in Westchester, IL sells a few 13.56MHz RFID Tags that might be useful to dissect and or transplant into. Very similar to a cufflink. I've ordered a few and will see how it works. Right now the Antenna design is the hardest part. How do you get enough power to the Power Coupled Device from an adhoc antenna? rich