Originally developed in the mid-1990s for manufacturing and inventory control, QR codes most often appear as a small graphic that looks like randomly placed small black squares arranged in a ...

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Designed as a high-tech marketing resource, QR (quick response) codes have many useful applications. These (usually) black-and-white algorithmic codes are gateways to a potential multimedia nirvana.

From the upcoming generation of “iPad kids” glued to their screens to the ubiquitous but unpopular QR code menu (paywall), critics claim that a proliferation of technology is depriving people of human ...