@isziaui @gvy_dvpont it's ver1 QR - only 21x21. There is no bottom-right alignment section. The green channel code I used can be generated with qrencode -l H -v 1 XLII -o XLII.png
qrencode from https://fukuchi.org/works/qrencode/index.html.en (via debian package for me)
My scanning is on an iPhone 14 pro - it usually finds it within a few seconds, but sometimes takes several, and occasionally just never finds it till I change something (relative size, monitor brightness, angle, etc)
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