E-Commerce Times Talkback
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You might have seen them without knowing what they are: little black and white boxes with squiggles and lines in the corner of a magazine advertisement, on a band's poster in a coffeeshop, or even on a T-shirt. Those things, called "QR codes," or "quick response codes," are part of a whole new way of connecting with consumers via their smartphones.
"QR Codes have been around for quite some time in other parts of the world, but they are catching on in the States for a few reasons," said Patrick Donnelly, a mobile solutions architect for 2ergo.com.
Your article is absolutely right; the main issue with QR Codes is usability - this doesn't only mean people not knowing how to scan the codes but also ensuring that the website they direct people to when scanned is fully optimized for mobile viewing.
What's really interesting is the opportunity these QR Codes have for connections - people meeting in the real world connecting in the online world.