Earlier quoted context omitted.
> the start of an era of "mechanical honesty" I'd like to mention the under-appreciated development of the cash register in the 1880s. Prior to the cash register, the owner had to trust cashiers not to pocket money. Cash registers became enormously popular and revolutionized sales since they kept everyone honest, as well as letting business owners know what was going on. (The book "Before the Computer: IBM, NCR, Burr…
And remember that receipts aren't for you. In fact, it might cost them money because it facilitates returns. Businesses don't care if they give you a receipt. They care if a receipt was generated by the machine, and are a check on the employee. those signs "if we didn't give you a receipt your meal is free" take on a different meaning in that light.
Aren't receipts used to track the store's revenue, as in the numbers reported to your local tax agency?
As far as I know, it's common for cashiers to have a daily/weekly/monthly slack value that they are allowed to report as a difference between the number reported by cash registers and the amount of cash delivered, because SNAFUs do happen during a day's work.