I was able to run a capture device while running the Visualiser that came with the developer kit on my Ultrabook.
It impressively and accurately captures the movements of my fingers in real time while showing a visual representation of the touch points on the screen. I also ran my Ultrabooks’ inbuilt web cam in an attempt to capture what my fingers were doing, again, all in real time. The Leap Motion is a pretty impressive device but also a pretty impressive display of power from my Intel Ultrabook in running and displaying the unit, ditto web cam and and capturing video all at the same time!
NB part way through the demo my other hand is dragging the visualizer around in 3D space.