I just found this thread for some odd reason, the two towers stuff would make a good movie. The RFID chips, as photon said - they are low power and pretty much useless other then unlocking your car doors and storing information. One of the biggest uses in the future for RFID chips is to store important medical info so in case of a medical emergency, someone can just pull their file. Think of your bluetooth, how well does it work 100 ft from its device? Unless the government has a mesh of networks in all electronic appliances, trying to track someone via RFID is useless.
The stuff about RFID's in hospitals, I believe I heard about that and its just their beds and stuff, not actually their bodies. By RFID'ing where they are, its easier for the doctors to pull up the medical info quick and easy.
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