SAN FRANCISCO— Amazon.com Inc. AMZN 0.68% recently opened its fourth cashierless convenience store here, all located within a few blocks of each other. Nearby, two startups are each demonstrating their own technology that they envision powering cashier-free stores across America. Zippin in June opened a 200-square-foot experimental convenience store in San Francisco’s South of Market district, a quick walk from the Amazon Go stores. Photo: ZippinZippin in June opened a 200-square-foot experimental convenience store in San Francisco’s South of Market district, a quick walk from the Amazon Go stores. Standard Cognition operates a demonstration store where shoppers press a button on an app when they enter the store.

Source: Wall Street Journal October 14, 2019 09:33 UTC