From Julius on 2016/04/11 15:24:21 +0000
Like the title says, this is use full for the push-up captcha as if you do the same amount of oush-ups every morning your muscles will get used to it, if this or something similar to this already does exist then can you tell me how to activate that? I am always using the latest beta version 
Greetings from Julius
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/13381935-random-captcha-difficulty