The technology looks very impressive but I do not see how this will be widely useful. The necessity to hold your arm out as far as it will go will only cause Go

The technology looks very impressive but I do not see how this will be widely useful. The necessity to hold your arm out as far as it will go will only cause Gorilla Arm, and is the reason touchscreen desktop PCs are always abysmal failures. You need to move your arm far more than with a keyboard and mouse, so you'll never be productive. The technology looks impressive but I can't see it being useful unless used for holographic weather reports where excessive gesticulation is apparently mandatory. 3D modelling with that would be exceptionally painful. Perhaps gaming or something, but I wouldn't want to be sat there on my armchair waving my arms around like I am suffering some sort of uncontrollable seizure (no offence intended btw, just the best way of describing my actions to onlookers).