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‘QR codes’ replace milk cartons in quest to find missing children

Say you’re sitting in a Starbucks and see a teenager who looks just like that picture on the missing-child poster you scanned with your smartphone in Safeway two weeks ago. But you’re not sure, so you whip out your phone and check. Bingo. It’s the girl. You click on the highlighted hotline number, which immediately connects you to the cops, who arrive in two minutes flat. Forget those old forlorn photos on milk cartons. The latest big thing in the search for missing children are “QR codes,” a bar-code-like “quick response” technology that puts missing-kid posters in thousands of people’s purses and pockets. After Facebook and Twitter, the codes are the latest tools in the tech and social media box aimed at finding kids who vanish.

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