One day, not long from now, virtually any store, restaurant, or business may be able to identify you, note what clothing you're wearing--and possibly even detect how much money you have in your wallet--as you enter the establishment.
With little fanfare the new technology that could make this possible, called RFID, or radio frequency identification, is rolling out on a massive scale. RFID tags potentially could be placed in clothing, laptops, even currency. The chips that run RFID tags are barely detectable flakes of silicon, some no bigger than a grain of salt. Each tag uses radio frequencies to transmit a code that uniquely identifies the tag.
How might the tags identify you? If, for instance, you buy a sweater using a credit card, your name could be forever linked with that particular plaid cardigan.
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