A big question is how soon these can function as a standalone device, or whether they would be tethered to a phone in your pocket first. Otherwise, are they mu

A big question is how soon these can function as a standalone device, or whether they would be tethered to a phone in your pocket first. Otherwise, are they much more than a head mount display accessory for Android? Head mount displays for mobile computers have been in industrial use for some time - e.g. http://www.stereo3d.com/hmd.htm http://www.stereo3d.com/hmd.htm