Microsoft's SideSight - Touch-Free Technology

Microsoft has developed a technology that is aptly named SideSight. It is a technology that involves a series of outward-facing IR sensors on an object that can be used to rotate, zoom, or even scroll an image on a screen that is too small for the iphone-like touch technology to be practical. I could see tons of applications for this technology from digital cameras to watches. Check it out for yourselves and let me know what you think.