Would have to assume if passed, this would mean graphene OS would have to leave the UK? No way they would implement age verification.
In terms of the actual nuditity detection, my understanding its done locally? Since it would be a fairly small model.
I remember watching a video of a North Korean phone, which from memory took a screenshot every 15 seconds or so. Now I read about age verification with nuditity scanning on the OS level being serisously discussed in a supposed free country