3 links have been added on this idea.
  1. Who knows what google are already doing – considering yahoo can spy on passers-by

  2. Cool, imaging walking past a huge ad in London and seeing yourself with someone else’s clothes superimposed on it, using augmented reality. Watch this space, its bound to happen.

  3. Billboard advertising is going to be revolutionaised with all the data they can use to target people and adapt the ads. just like the web.