January 21, 2005 Radio Frequency Identification Devices (known as RFID's) are set to usher in a new world of consumer convenience. But beware the 'silent stalker' that accompanies this technology. You may need an electronic jammer to shield your privacy. An RFID attached to your windscreen (E-tag) lets you automatically pay road or bridge tolls but in parts of the USA it can also buy a fast-fill from Mobil or a Big Mac at a McDonald's drive-through. Now, micro devices, no bigger than a grain of sand, can be implanted in passports, driver's licences and credit cards to transmit your ID. Embed them in products and they transmit (the equivalent of) a barcode - able to be read at a distance.
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