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The Self-Checkout Nightmare May Finally Be Ending
(gizmodo.com)
This is a most excellent place for technology news and articles.
We have that at a grocery store in my area, though you use an app on your phone to scan with the camera and the "random testing" seems to happen pretty much every time. If I had one of their scanners instead of their laggy app, I'd be much happier. (Though I guess modern handscanners are Android devices with a laser, so maybe not that much better...)