It seems like a common experience at a hardware store to have an employee help you find what you need (versus, say, a grocery store), then finally direct you to

It seems like a common experience at a hardware store to have an employee help you find what you need (versus, say, a grocery store), then finally direct you to the front of the store to pay. If that same employee could also ring you up on an iphone, I think it would at least be very cool, if not more efficient.