If I really had to, I would require everyone to whip out whatever assets of sexual maturity they happen to have, and let the computer analyze it and decide a maturity level.

I would also keep copies for blackmail purposes, because the world is a better place if we all mistrust this solution and anything remotely like it. It'll be in the legal fine print, which I'm confident no one will read.

Every answer (other than "trust the user to self identify") is at least remotely like mine, but I'm proposing we cut out the half-measures on the way.

To avoid personal consequences, the system I architect will probably wait on a dead-man-switch for me to die or be incarcerated.

Then it will publish everything it has ever seen, along with AI generated commentary. I'm confident that some of it will be hilarious, and I am hopeful that it will piss everyone off enough that we stop doing this kind of thing.