So we are ignoring jurisdiction? … Well… even if we ignore the possibility of an infinite universe, tracking hundreds of thousands of legal systems and species biology (what is intoxicating to whom, the cognitive self-development thresholds, how much of a substance one may serve to whom) and being able authenticate/verify an ID (we have photo-ids, but maybe others are different)… like a slime-species that identifies each other by smell… or taste… I’m confident that for any interesting set size, this would actually be an unsolvable problem.
So we are ignoring jurisdiction? … Well… even if we ignore the possibility of an infinite universe, tracking hundreds of thousands of legal systems and species biology (what is intoxicating to whom, the cognitive self-development thresholds, how much of a substance one may serve to whom) and being able authenticate/verify an ID (we have photo-ids, but maybe others are different)… like a slime-species that identifies each other by smell… or taste… I’m confident that for any interesting set size, this would actually be an unsolvable problem.
A universal biometric verifier checking against approved ID cards could be interesting in a setting like that