We're all about breaking the law one way or another here at Gizmodo, so enjoy this video tutorial on how to hack an ATM. No, you won't be walking away with wads of cash (not that that wouldn't look suspicious or anything), but you can change the printout on receipts. So, instead of saying "ATM No. 12345," you can change it to say "Sic semper tyrannis" or "gizmodo.com" or something. Please don't get arrested.
Hacking an ATM Machine [Hack 247]