Hell, by then all the food will be chipped, too, so you won't even have to check out. Just put your shit in the cart and let the scanners at the door ring it all up as you go out, and they scan your chip at the same time and debit your bank account. The food will be so expensive, you won't be able to buy very much of it at one time, anyway. You won't know until you get home that your bananas cost you $22. They know you won't come back to get it corrected, because it will cost you more to do it than what the difference will be.