The world in your phone Somehow have an app where you take pictures with that app, and once its taken its saved to that location. if you have the viewfinder open and are walking around in the same location the picture/person shows up. if more then one picture has been taken it would be sorted by date. im guessing if you had it open on times square or something the amount of images would be overpowering each other. Just the fact that you could walk around looking through your phones camera (on screen) your city or mall, where ever you may be and just see a moment captured as if you were there with them.