Sounds like a nice little earner for someone.
Although applying such a verification system to the world wide web of pr0n is questionable.
Are our spymasters going to block every single pr0n site who don't sign up?
Even though the laws and legislation of our tiny island probably won't apply in the sites country of origin?
Am I going to have to get a VPN to access my favorite Brazilian Midget Nun Frenzy grumble vids?