Hello @JonatanSalas !
I´m trying to use the back camera of the phone to scan, and to do that i am changing the default constraints to { facingMode: 'environment' }.
The camera that is used is still the front one, and it only flips the video horizontally. I can reproduce this on my project aswell as on the demo of the package. Tried on different phones aswell.
I also tried { facingMode: { exact: 'environment' } } and { facingMode: { ideal: 'environment' } } but with no success.