I want these, and then I want an app on them that will tell me if the person standing directly in front of me is on my LinkedIn/Facebook, and if so, what their name is and what they do.
The Facebook app already know where you are. If both you and the other person have the Fb app, then I'm sure this feature could be implemented relatively easily.
Unfortunately as the other reply says, there's no camera to see who's there. But as someone who's bad with names I generally agree, in fact I don't even need the Internet connectivity. Just let me write a note on someone - "John Smith. Met at Steve's BBQ" - and have it show up when the camera sees them again.