Some self-checkout technology just makes sense. Amazon's "grab-and-go" no checkout technology may feel a bit like stealing, but it's actually a fully automated process that eliminates both the need to checkout and the ability to steal,

Amazon (AMZN) - Get Free Report Go stores use sensors to charge customers directly through the company's app. As long as you have the app open and an account, there's no need to run items over a barcode scanner.

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