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 ...

Your smartphone is full of surprises. There's an app if you want to use your phone as a magnifying glass or scanner. Tap or click here for hidden apps on your smartphone and how to find them.

Last year Instagram added some Snapchat-like nametags that could bring a friend to your profile just by pointing their Instagram app’s camera at the code. Now, after a short test period, it’s widely ...