Makes me think of Snow Crash a bit... plugged in constantly to virtual reality.
For example I've quite literally got a little 3d animated ghost that sits in the corner of my favourite hangout, which only I can see through my phone when I point its camera in the right angle, which tells me the name of the track being played on the house speakers .. it really is a moment like Snow Crash, played out in real life, I have to say..
Up next, Finn the finger ..
But! Its an awesome tech, and I'm pretty sure its going to hit the store soon enough. I'm currently working on ways to embed tons more stuff within the target matrix .. its mind-boggling to think that any recognizable surface can be the human interface mechanism, now.