I don't think it will take that long to have lightweight additive projection glasses with some sort of camera/depth sensor and eye tracking. The processing pow

I don't think it will take that long to have lightweight additive projection glasses with some sort of camera/depth sensor and eye tracking. The processing power or battery for that form factor will not be there for another 10 years - but offloading processing and power supply to the phone in your pocket via well designed tethering is conceivable. I think we'll have this in a couple of years, and you'll control it via voice recognition and hand gestures.