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Although QR codes, or quick-response codes, have been in use for nearly 2 decades, companies are just beginning to tap the power behind these black-and-white squares that are popping up everywhere. And with smartphone use on the rise, users are reaping the benefits of these QR code campaigns in a big way.
Wasp Barcode Technologies, which has been tracking QR codes, developed a list of the best and most creative QR code campaigns of 2011. Here are the highlights:
* Tesco.com: This U.K. supermarket-chain owner found an innovative way to connect stores and consumers...