Snapchat – Snapchat lets users scan Snapcodes, a type of QR code unique to the platform, to add friends quickly. Twitter – Twitter's QR codes make it easy to search, and then follow other users.

Scanning QR Codes Online If you prefer not to use any apps or if you are on a computer, you can scan QR codes online. Visit a QR Code Scanner Website: Go to a website like ScanQR.org or 4qrcode.com.

QR codes are everywhere nowadays. We scan them at restaurants to read menus, connect to Wi-Fi at the office, access promotional offers, and many other places.

A report states that a recent Google Messages beta has brought about the company's QR code-based verification keys on Android ...

For everything else, your Android smartphone will have a high quality camera that, with the right lighting, will be able to do the job well enough. If in doubt, try and use a printer scanner, though.