Google as a portable ID

Anecdote from Dan Bricklin about Charles Simonyi

The only note I made was about an anecdote that Charles told. He doesn't usually carry much in the way of ID. He was stopped at the guard desk at a company where he had an appointment. No ID, no entry. He asked if the guard had web access on the computer on his desk. He did. Charles told him to look on Google for "Charles Simonyi". Up popped his picture. Yep, that's him. He was let through.

What do you say - Google as a portable ID ? Who needs passport or a DMV license !