From Jens B. on 2016/03/12 10:17:41 +0000
My QR captcha learned a few item’s barcodes which I have to scan in order to disable the alarm.
I really like this captcha because it forces me to get out of the bed and gets my blood running. 
A great feature would be that, when there are already a few code scanned, Sleep telling me which code to scan. Like ‘scan this book’ or ‘scan that DVD case’. I’d have to figure out where I have to go in order to disable the alarm.
In order to realize this feature, learned codes should be labeled.
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/12907557-for-qr-code-captcha-add-an-option-to-force-me-sca