> Having a unique number that is needed for identifying individuals, but also often used for authentication and thus meant to be kept secret, is bound to go wrong
That's also not how they are used. They're maybe the username, but never the password, and absolutely not supposed to be secret. They are supposed to be extremely public.
That's also not how they are used. They're maybe the username, but never the password, and absolutely not supposed to be secret. They are supposed to be extremely public.