The video mentions the problem of always having one's hands in the way with a direct interface. This could also be alleviated by moving the hands underneath the

The video mentions the problem of always having one's hands in the way with a direct interface. This could also be alleviated by moving the hands underneath the display ala the capacitive mouse from Microsoft Research: http://arstechnica.com/hardware/news/2009/10/video-microsoft-research-demoes-five-multitouch-mice.ars http://arstechnica.com/hardware/news/2009/10/video-microsoft...