abstract:A tin foil hat is a piece of headgear made from one or more sheets of aluminium foil or similar material. Alternatively it may be a conventional hat lined with foil.
We were a little wary at the first when we heard about tying RFID so closely to our monies, and that Chase Bank blink card of ours has been collecting dust ever since it showed up in the mail, but the latest failings of RFID "security" have us running for the hills -- tin foil hat in tow.