FedEx Kinko's Payment Card Hacked
This site goes into detail about how the FedEx Kinko’s ExpressPay stored value card has been hacked. There’s nothing particulary amazing about the hack; the most remarkable thing is how badly the system was designed in the first place. The only security on the cards is a three-byte code that lets you read and write to the card. I’d be amazed if no one has hacked this before.
EDITED TO ADD (3/2): News article.