I would really like to know the application(s) for this in real-world tests. Can't think of any right now besides controlling your smart phone with "hand gestures", and even then I wouldn't want it. Or, having your phone run over a network to control another device, but still don't see any REAL uses for it. Unless there is something that WOWs me, and it's implemented completely right. I don't doubt right now this has some peoples gears turning to how things could work, but will it be "gimmiky" or be useful?
I hate already the transition from physical keyboards on phones. I will be buying only phones with physical keyboards till they are not produced anymore, but I think a demand will always be there for them, only time will tell.