By the way, as I just wrote about cards and payment systems, I thought that the news below could be relevant.
I have just read in Bruce Schneier’s Cryptogram that a man used system codes, probably taken from an ATM manual, to fool an ATM to hand him more money than it should. The machine was handing out US$20 bills thinking they were US$5 bills.
There are speculations that the trick involved the use of a default password on the ATM.
I’ve found a video on YouTube with the CNN story: