Let's be realistic here, in terms of surveillance and privacy we already have a national ID system for everyone who is an American citizen. People already use S

Let's be realistic here, in terms of surveillance and privacy we already have a national ID system for everyone who is an American citizen. People already use SSNs for an ID, your credit card transactions, bank records, and phone calls are already linked to you. If it's opt-in only then it'll never see significant adoption. You can't require e.g. banks to use some secure identification system without also requiring citizens to use that secure identification system.