Comment Reverse debit (Score 1) 861
The university I attended started a debit card program in 1992, so that parents could give money to their kids to spend on food and books at the student union. It seemed to work normally for almost everyone, but a friend's card added the debited amount to his balance every time he used it at the bookstore, rather than subtracting it.
Unfortunately, the error was discovered after only a few weeks, and he was too cautious to buy stuff for all his friends...
Unfortunately, the error was discovered after only a few weeks, and he was too cautious to buy stuff for all his friends...