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 it already. The humble QR (or Quick Response) code has become ubiquitous ...

QR codes can act as a convenient shortcut but, in the right hands, it can also be a tool for scammers. Here's why you should avoid scanning unknown QR codes.

QR codes can include contact information, calendar events, website links, phone numbers, email addresses, Wi-Fi information, and more, so they can be pretty handy. Here's how to scan a QR code ...