Suggestions - Scan Efficiency

[simonerni]

I have 2 suggestions regarding scanning efficiency.

First, make QR codes scannable even during the display of the spinner, and green or red checkmark. This makes it possible to scan the certificates of people that pre-emptively self-validate much faster.

Second, remove or significantly enlargen the square on the checking app in the middle of the screen. It gives the users the idea that they must place the QR codes exactly in the square, but since it would be scanned on the whole area, the effect is that the QR code is unnecessarily small and thus even more unreliable to scan.