In some sense, a PIC is a partial environment map. When captured with WearCam, the PIC is a "painting" of sorts, showing where I have looked around.
This "painting with looks" paradigm gives rise to shared visual spaces. If for example, I am shopping alone, looking at the apples, my wife might look in remotely over the Internet, and navigate my PIC, and pan over to where I last looked at the milk, and then remind me via RTTY (radioteletype) to pick up some milk. RTTY appears superimposed on my screen. Since my reality is mediated, RTTY appears to float in space on top of objects. Other material such as names of faces that my apparatus recognizes might also float around with those faces, etc. The photoquantigraphic image representation lends itself well to "virtual light" name tags, etc. with a sustained illusion of a rigid planar patch.