Is OpenID the Master Key

I was reading an interesting post about OpenID at Basement.org and how Great Inventions for the Computer really need a metaphor in order for the average computer user to understand them.

Let's try this, OpenID is the Master Key vs. the current state of affairs which is a key ring with a key for every site.

Still working on how to fit Security Tokens like the PayPal Security Key which I posted about earlier into the metaphor.