->store sized vending machines

Which was literally the shopping experience before Selfridges "revolutionized" the department store experience by letting customers have direct access to goods for sale.[0]

Before that everything was behind a counter and you have to be served and monitored. Even the grocery store was a similar experience, whereby you would give the clerk your list and they would select everything for you.

Everything that is old is new again.

0. https://en.wikipedia.org/wiki/Department_store#Innovations_1...