Reply #4: The are much smaller than a deck of cards

[markus]

There is major research going on up here in N.D. at NDSU, and Alien Technologies is planning to build a fab for them up here.

RFID is going to be everywhere. It's still pretty flaky in terms of setting up the transcievers and trigger reading them, but before you know it, you're boss will not only know if you're hiding in the bathroom, she might know which stall you're in.

Hell, if these get adopted by booksellers and libraries as well as on IDs, someone could tell as you walked down the street what book you're reading. Go noodle on that lovely idea for a while.