Earlier quoted context omitted.
> my phone doesn't have a QR reader. It is possible it does. The default photo app on Android is a QR code reader, at least on Google Pixel phones. I open the photo app and then point it at the QR code. After a moment or two text appears which allows me to open the QR code link. I only realized this in the last month or two...
I have a CAT s61, it comes with it's own camera app. I used to be able to do it with the camera app on previous phones that I broke, which is why I got a rugged phone. (also the IR camera and laser pointer.) I would just install one, but at a glance, all of the QR code apps seem like scams, and I haven't cared enough to do any research.
Edit: you can find it on Fdroid or probably on the project site/page. It's not getting updates, but why would my QR scanner need those, anyways..... also Google doesn't want it to be published anymore, iirc due to it using relatively ancient APIs.