https://finance.yahoo.com/news/exclusive-amazon-targets-airports-checkout-060846539.html

For months, the world's largest online retailer has been expanding Amazon Go, where customers scan their smartphones at a turnstile to enter, and then cameras identify what they take from the shelves. When shoppers are finished, they simply leave the store and Amazon bills their credit cards on file.

Amazon has opened seven of the stores to the public since January: in Chicago, San Francisco and its hometown Seattle, mostly catering to workers in nearby offices looking for a quick lunch.