Last week, I was working a double shift down at the local drug store. It had been about six hours in a row, and I was about to have my lunch break.
Suddenly, this lady comes up to the register and gets one of those prepaid visas and says she wants 500$ on it. She doesn't appear to be in her purse producing the cash or a card, so I asked "how are you gonna pay for this?" to which she replies "like this" and turns the computer towards her, hits payment, cash, 504.95, and runs out the door.
We've basically been robbed out of 500$. I get on the phone and page "Code 99, we need a post void, stat" (since code 99 means vaguely "security"). The manager literally came running out the office and was hopefully able to do a post void before anything bad happened.
We called up the company that does the cards and told them the number of the card that was stolen, and that we had done a post void. They deactivated the card permanently and set up something to notify us if the card was tried to be used, and to track it.
A notice was posted to all the stores around the district and we haven't heard anything back.