Amazon has opened a new physical store in its home city of Seattle, selling ready-to-eat meals and snacks. The twist? There are no tills. Instead, the Amazon Go store gets shoppers to fire up an app, then tracks what items they take off the shelves then walk out of the door with, charging their Amazon account automatically. “We asked ourselves: what if we could create a shopping experience with no lines and no checkout?,” claimed Amazon as it revealed the store, which for now is only open for the company’s own employees to test. “Could we push the boundaries of computer vision and machine learning to create a store where customers could simply take what they want and go?” Good news for short-of-time shoppers, if not quite so good for the fellow humans who might have been employed as cashiers.