I can see stores being built with a counter and clerks and merchandise behind bars with credit/debit card purchases only. Tell the clerk what you want, he rings it up, you swipe your card and he shoves it out to you. Customers won't be allowed past the counter. Like some of our liquor stores used to be.
That's already been done .......
https://en.wikipedia.org/wiki/Consumers_Distributing Consumers Distributing aimed to reduce costs for customers by stocking merchandise in a warehouse-type stocking system instead of displaying them in a costly showroom. Customers made their selections from a catalogue, filled out a form listing the items they wanted, then waited for stock staff to retrieve the items from the warehouse. The business model of Consumers Distributing has been described as "Internet shopping before the Internet".[1]
