It read like they DID know how to spot it, and the reaction was... "never again for anyone under any circumstances". Blanket bans like the one described are al

It read like they DID know how to spot it, and the reaction was... "never again for anyone under any circumstances". Blanket bans like the one described are always wrong. ;) If there's a problem, monitor it after every shift, or every day, or weekly. You know who worked what registers; monitor/scan/review, then take action against the offenders. I worked food service with POS; we had to review things every drawer change, and discrepancies were noted. Repeated discrepancies (either money or between food usage and money) would be tied to someone (or multiple people) and action was taken. It's not always that hard, just a bit time consuming, but... it's part of the job (or was for me).