Ever tried to apply for a visa waiver for the UK (ETA Electronic Travel Authorization)? They have the most fucked up app for that. You have to take a selfie, and it tells you “No, bad, try again”. And then you have to click through several pages of what to do and not to do again (all had been painfully followed in every attempt).

And why any of the dozen+ pictures was bad was the apps well kept secret. Finally, one had been accepted, without any discernible difference to the previous attempts.