I think the point is that this is a solved problem in most places. I always see people from US writing that modern authentication solutions wouldn't work, despi

I think the point is that this is a solved problem in most places. I always see people from US writing that modern authentication solutions wouldn't work, despite them being used for decades for example in many countries in Europe. Of course, all solutions comes with their own set of issues but preferring SSN over public/private keys for authentication is wild.