QR codes are used for everything from opening a restaurant menu to making payments: just point your camera at the QR code, and your phone will automatically open the relevant page. But what happens ...

Two-dimensional barcodes called Quick Response codes, or QR codes for short, are used to store data that devices can read. While QR codes are popularly scanned via smartphones, what if you want to ...

Posts from this topic will be added to your daily email digest and your homepage feed. You don’t need an app for this —your phone can do it already. You don’t need an app for this —your phone can do ...