[leonardinius]

True. Especially if you are an owner and cashier at the said business.

But no so if the cashier is your employee. Keeping track of all small deals and ensuring most of them reaches your bank account and not your employee pocket might appear even bigger problem. I know some small dining places where profits 3x skyrocketed since they introduced cards payments (in such places most of the profit comes from small things with crazy margins, such as tea or coffee)