We've seen this technology, using a live video app to identify your name in real-time on the iPhone, from our friends at Face.com (now purchased by Facebook and the technology shelved) which could have used a content system to deliver an ad to those faces identified.
As cool as the movie is, there is no way to opt out of the sci-fi eyeball identification technology that Hollywood employed. We believe that using a device's radio waves, emitted form most every transmitting gadget these days was the right path to take, as these could be turned off at-will by the participants.
So will you opt into more information as you react in a "heads up" manner, not buried in your phone in the real world?
Our Kiosk story from VentureBeat. We are not in the business of pre-crime, but pre-purchase and buying intent. Say you encounter some "smart ads" the next time that you are at the mall - will you opt-in for more information? Or will you remain head down, buried in your phone while the rest of us are in the real world? Lets make things interesting at retail!