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16 Jan 2006
An amateur inventor has designed an easy to make DIY wallet that blocks RFID signals.
Dustin Kirk, a usability engineer for software firm Benefitfocus, has published the plans on his web page for anyone to try. He said the wallet can be built at minimal cost using duct tape and aluminium foil.
"It seemed to be pretty well known online that aluminium foil prevents the transmission of RFID signals," he writes.
"A quick test at my workplace using my badge confirmed this. The next step was to design a wallet with aluminium foil embedded inside."
Kirk, who adapted the design from a duct tape wallet he built, has tested the design using cards with integrated RFID tags. He reports successful signal blocking even when the wallet is half opened.
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Rfid Blocking wallets
Actually, al foil works pretty well for passive tags. You can purchase RFID Blocking wallets and passport holders at http://www.difrwear.com
Posted by: RFID Blocking Wallet 04 Mar 2006
It won't work
I work for a company who develops RFID readers for industrial applications and we, along with several other manufacturers, have been able to read passive rfid tags from inside iron cores. A little bit of foil will not be a problem.
Posted by: Martin Fraser 08 Feb 2006