A Technical RFID Primer
gManZboy writes "Roy Want, principal engineer at Intel Research, has a pretty meaty technical overview of RFID up at Queue. If you ever wondered how these little things actually work it's worth a read. For instance, I was intrigued to find out how the tags (which are generally battery-free) can absorb enough energy from RFID readers to then power up and transmit their own signal back to the reader."
well, i can go to canada and mexico but i dont really want to
That's alright. From the sound of your post, I don't think they want you there anyway.
so that their isn't a lemonade am Protesting by bSDI who sell