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January 7, 2014 AT 11:59 am

Credit Cards and Magnetic Stripes

Credit Cards and Magnetic Stripes @ The K&J Magnetics Blog.

While we have a good idea about how these things should work theoretically, it seemed about time to try erasing cards with some magnets.  This article describes our test results with some cards and a card reader, and provides some guidelines about how to avoid erasing a credit card accidentally.


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