You're spot on with the issues you mentioned. The issue I thought about was who is going to be the one housing the centralized database. Would it be government

You're spot on with the issues you mentioned. The issue I thought about was who is going to be the one housing the centralized database. Would it be governments? Private corporations? Mixture of both? It's not clear what's the best option. Not everyone trusts the government to have all that information and not everyone trusts private corporations either.