1. How can someone who does not have an account prevent themselves from being tagged and/or identified in uploaded photos? Corollary: why isn't the tagging and identification of a person an opt-in feature only?
I'd like to add to the above question: how does (or can) a person who never had an FB account request deletion of (possibly illegally collected) private data about them, without having to register to the very platform they're not a member of?