MagSpoof: Emulating magnetic stripes on credit cards

MagSpoof – “wireless” credit card/magstripe spoofer

The MagSpoof is a very cool little device that can emulate a credit card swipe by manipulating an electromagnetic field near a card reader – because of how card readers read cards, the MagSpoof can do this wirelessly on non-wireless card readers.

While the device is cool, the most interesting part of the article was the explanation of how magnetic stripes on credit cards work, and the fact that you can see the data by coating the stripe with a little black iron oxide (as seen in the gif above).