Amazon has been getting people to sign up to have their homes, cars, garages etc. open to delivery people for stuff that they've ordered. I figure it's only a matter of time before they start warehousing stuff you haven't ordered there. Maybe you can just wander out to your car and browse, scan whatever looks good with your phone and take it. (Hopefully kidding but I guess you never know what people will trade for "convenience".)
John Deere already does that for common parts. They put a shelf in the farmer's shed with oil, filters, belts... and the farmer takes out what is needed. Once a week the dealer comes by and refills whatever is missing, and once a month sends a bill. No need for any of the scanning as you take it out: you are the only one with access to the cabinet so if it is missing you bought it.
TIL, thats pretty cool and makes a lot of sense. I used to work at a mine and we'd break expensive parts all the time, the supplier would have to ship them in from halfway across the world. They should really do something like that.