You don’t need an app for this —your phone can do it already. The humble QR (or Quick Response) code has become ubiquitous. Invented back in the 1990s to scan ... since Android 8 and iOS ...

The link should open up immediately. 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 ...