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Re:Amazon Ditches 'Just Walk Out' Checkouts at Its Grocery S... by LordDragonfang on Tuesday April 02, 2024 @07:25PM (#39911947)
Tom Scott did a great video showing the last one in operation. They use totally unique keyboards with what is essentially a stenography system:

https://www.youtube.com/watch?v=XxCha4Kez9c

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