September 14, 2012 6:47 PM
QR codes (short for “quick response”) -- you’ve probably seen them around because they are popping up everywhere you look. They are those little squares with a funky black and white pattern inside. They are cousin to the bar code.
You use a QR code reader on your smart phone (and your phone needs to have a camera) to scan the square and read the information in the code. That information can contain a variety of information: a link to a video, webpage, document, picture, graphic, or just plain text. [More]