QR codes are pixelated black and white squares that perform magic when we point the cameras on our phones at them—but what’s going on that makes this little spell possible? QR codes are akin to the ...

What is a QR code? A QR code (short for Quick Response code) is a two-dimensional barcode that can be read by your smartphone camera. QR codes provide quick access to product information, promotions ...

Scanning a QR code with your phone is a common request, and should be simple, right? But it's not always as obvious how to do it as it should be. Read on for straightforward, illustrated instructions ...