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.

They make life easier by letting you access links, download files, or make payments with just a quick scan. But what if the QR code you need to scan is on your phone itself?

You don't need your phone to open a QR code. You probably already know how to scan a QR code with your phone. It's simple enough: just open the camera app, point your phone at the code, and tap ...

How to scan a QR code on Android Most Android phones should be able to scan QR codes directly from the camera app, so give that a go first. If that doesn’t work, you can try a similar method to the ...

There are plenty of ways to scan QR codes on a laptop, but you may not realize how easy it is to do with a little help from software or apps.