Earlier quoted context omitted.
Germany has a system in their ID cards that allows anonymous age verification. No one uses it but it’s a technical marvel in my opinion. The site asks for specific read permissions and the user can decide if he wants to grant them. One of these permissions is age verification. You put the phone on the ID card and there is a cryptographic proof that the user connecting to the site is in possession of an ID of a person…
It's hardly an age verification if it just requires the bearer to have an adult's ID card. You borrow your friend's card, or you "borrow" your parent's card, or you pay someone who sees this market opportunity. I think it's ridiculous how the lawgivers are telling the companies to just nerd harder, but they're definitely going to have to nerd harder than that.
Then when they can't achieve it they can say, "well we tried the non-authoritarian way and the nerds didn't oblige, now we're forced to bring out the brownshirts. Papers please!"