QR code not scanning 10% of cases?

[ghost]

10% of cases, when you get a good clear view of the QR code, it will not scan. It's smack in the middle of the green rectangle, properly aligned yet it won't detect it.. Not moving.

Yet when I move in the paper with the QR code on it from far, bring it closer, most of the time it will detect it. So why wouldn't it detect a completely still close-up QR code better than the moving from afar QR code?

[ghost]

Oops the problem seems not to be that the QR code is not read, but that the camera view does not go away after successfully reading the QR code automatically!

[dcousens]

@wesleywesley please PR your fix :)

[dcousens]

Closing in favour of #59