Wouldn’t that be glorious? No waiting in line to buy what you have already determined you want. None of the hassle of having to talk to a cashier that is making awkward small talk or trying to get you to enroll in their credit card program, or worse a cashier that doesn’t talk to you at all.
Apple has already instituted this for smaller purchases and other independent stores are experimenting with in-store scanner guns, or apps on your smartphone to figure out ways to get you in and out of the store more efficiently. Once they are able to solve the obvious and ultimate problem of shrinkage, those who wish to skip the checkout process will be in luck.