When I'm far away from a displayed QR code, scanning it in the Moodle mobile app is nearly impossible and I have to resort to third party scanners that open the QR code in the browser rather than the app, making me have to log in to Moodle.

It would be nice if I could zoom in when scanning the QR code and enjoy the benefits of opening it in the app.

I'd be happy to try to solve it in a PR if it is welcome.