Re:Concept Good, at first. (Score 1)

But in reality, there isn't anyone who is secure enough, trustworthy enough, powerful enough and smart enough to pull off a system that would work and would be trusted.

And isn't that the point? Who can you trust enough to have a "global" authentication scheme, anyway? I think the Passport idea really only become useful when used in the context of large organizations/corporations where thousands of individuals all have common goals/values/purposes. It's those groups of people who can trust each other enough to have a corporate signon or an organization-wide authentication system.