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Deleted member 93354
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They can also be secured to only release their ID code to authorized readers via an encryption scheme. Or have public and private codes, or business and personal. Or require a PIN in addition to the ID number. It's no more risky IMO than any of the current security methods out there, and probably a damn sight more secure, since the device itself can't be stolen or lost.
Your credit card is tied to a "central server that tracks everything you do". Your cell phone is tied to a "central server that tracks everything you do". Your driver's license is "central server that tracks everything you do". So is your SSN and your Gmail address.
There's a difference between RFID and smart chip. I'm not trying to be an ass, but do you understand how RFID even works?