"Hmm, I wonder how long it'll be before Microsoft makes me carry around one of Wozniak's new devices so they'll know where I am? Oh, wait, I already carry around RFID. Heh. Well, we can both play this game. I can see it now: the "where's Bill Gates' car?" Web service.
Hey, Steve, send me one of these, and I'll promise to carry it around everwhere so all my webloggers will be able to see where I am."