March 23, 2010
Does aluminum foil block RFID chip signals?
If a credit card has a RFID chip inside it, and you covered the entire credit card with Aluminum foil. Would that block someone from illegally ( by using a RFID reader close to your credit card ) getting your info from that RFID chip?
Filed under Blog by on Mar 23rd, 2010. Comment. 
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Comments on Does aluminum foil block RFID chip signals?
Yes:
http://www.rpi-polymath.com/ducttape/RFIDWallet.php
It would, but that is not how RFID works. Essentially there is no data on the chip – just an ID code. The RFID reader would have to have access to the database to correlate the RFID tag on your card to a specific credit card or account. So you are perfectly safe from rougue readers.