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 ...

Scan a QR code with your webcam Sometimes you have a QR code on a sheet of paper but your phone isn’t handy. Your laptop has a camera, though, and you can use it instead.

At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any infections, adware, or potentially unwanted programs that may be present.