[mmooss]

It's a general principle but too simplistic to contribute to a solution.

I believe I should prevent you from starving, willfully or negligently harming (in a serious way), or denying significant education or medical care to your childern; I believe you shouldn't be able to take your children into some adult places like strip clubs.

The strip clubs also have an obligation to keep out your children and need a method to do so, in this case the online 'strip clubs'.

The question is, given other priorities such as privacy, what is the best method? I think it's parental tools in OSes, including the ability to setup accounts for minors.