[henriquecm8]

I could read half of them, it was detecting a face in the first Mechanical Girl, face detection probably prevents it from working, since it worked for most of the sceneries. It also didn't work on any picture that extrapolated the boundaries of the qr code.

I tried with built-in camera app of my Samsung m21.

If anyone wants to use this, they should do a lot of testing first.

Edit: I also noticed that angle matters when scanning from certain monitors, the first qr code didn't work at first, but I noticed the top of the picture was too dark then I tried to hold the phone in the same angle as the screen and it worked.