Years ago, gs used to keep a stack of bills in a secured drawer at gs, used for robbery attempts. A gs tm noticed it & never asked what it was for. That tm started to skimming cash at the gs, & a/p wasn't sure which gs tm was doing it. A/p moved some cameras around in gs. One night, when that tm was closing gs alone , they got real greedy & took the bait & a/p nabbed them. The rumor for stealing by the tm, was some fast spending money. I have not seen the bait money in few years. It was mostly of ones, with a few big bills on the top & bottom of the stack.
The most scram, is cashiers taking $5 gift cards when buying required items,. I won't say how it done. But, I did guess right when a/p was telling me about it.