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How to kill RFID tags with a cell phone
USA Created: 19 Feb 2006
Radio frequency identification (RFID) tags -- tiny wireless circuits that derive their power from radio waves and cost just pennies to make -- have quickly found their way into identification badges, shipping containers, even ordinary store products. Because, unlike barcodes, the tags can be read surreptitiously, a number of groups have raised privacy concerns. To address these concerns, leading RFID makers have created so-called 'Gen 2' chips that will divulge their data only after a reader transmits the correct password. The new chips can also be triggered by a different password to silently self-destruct, for example as a customer leaves a store. Encryption protects the password transmission. But renowned cryptographer Adi Shamir of Weizmann University claims to have found a way to bypass the encryption scheme and obtain the self-destruct password using technology no more sophisticated than that in a common cell phone...

http://sf.indymedia.org/news/2006/02/1724713.php
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Source: San Francisco IndyMedia 02/15/06

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