QR codes can be really handy. A grid of seemingly random black-and-white squares can hold enough information to store website URLs, contact information, email addresses, pre-defined SMS text messages, ...

As smartphones have become more and more ubiquitous, so have QR codes. These maze-looking squares are a type of matrix bar code that contains data — usually, QR codes point to a website or open a ...

QR, or quick response, codes have been the "it" advertising vehicle of 2011 with good reason. Their relatively small footprint and wacky design make them easy to notice and implement. Found on ...

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