https://www.cnbc.com/2018/01/09/between-walmart-and-kroger-500-stores-are-about-to-ditch-cashiers.html

Walmart is expanding its "Scan & Go" technology to an additional 100 locations across the U.S., the retailer announced Tuesday, playing into a growing trend of companies giving consumers the option to shop their stores without interacting with a cashier.

Others working to perfect their own digital shopping scanners include grocery giant Kroger and internet behemoth Amazon, which has been piloting a store without checkout lines, called Amazon Go, near its Seattle headquarters.