Restrict forum access by age

[lucky64]

Just wondering if there's a hack that will allow one to restrict a person from a specific forum if their age is too low (aka a porn subforum, and if they're under 18 it wont let them in) if not could someone please make this

Thanks

[Marco van Herwaarden]

If you don't have too many members signing up for it, you could just use a Joinable Group with new member moderation.

[lucky64]

A lot of members will be anticipated.