Self-checkout fraud possible (Score 5, Interesting)

I worked at a Wal-Mart for a while as a cashier. Our store had 4 self-checkout machines where you ring up the items yourself. One cashier was assigned to "Paystation" where people could pay with checks, and other assorted stuff the machines couldn't handle. When working at the Paystation, you were given a barcode card which when scanned would bring up an admin-like menu with price override options and other assorted "cashier" tasks. At one point, I scanned that barcode at my register, printed a receipt to show the number it represented, took that home and recreated it on my computer and printed a new version. I taped it on the back of my name tag, and it worked like a charm. Here's the scary thing: Cash Office also used a barcode for those machines to refund money, etc. They could literally empty the machine of cash with their card. If one took a picture of their card (which usually was worn around the neck in plain sight), it wouldn't be hard to recreate the bar code without knowing the numbers. Talk about fraud potential... I almost wanted to do it as a proof-of-concept, but thought that just being caught with the barcode would get me in big trouble, so I didn't end up trying.