I know we can't open the drawer if someone wants change for a bill, but a lady wanted to pay for her $3 purchase with $60 (3 20s) to get a 50 dollar bill back, I now know she was trying to scam me after I allowed it because she tried to show me that a gave her 2 5s, and 2 ones instead of a 50, a five, and 2 ones. I told her we could review the tape to see and she left and said she would be back, lol if I really gave her the wrong change she wouldn't have left. But is that against the rules? I'm probably not gonna allow it again either way.