Agreed on the patent lawyer comment, for sure.Neat. Worked on similar stuff in HP Labs 20 years ago. Nice to see it hitting the streets. Hope they have good patent lawyers in Senseg... they could do very well.
I like the no-moving-parts approach that Senseg takes -- just add another transparent layer to the screen and you're done. Found some more specifics in a 5-minute GameSpot video released on 11-January 2012 (from Senseg's company news page).
Another thought after watching that -- if it's hard to convey the usability of a normal tablet or touch-screen without actually touching it and using it, then the effect of haptic tech on the UI experience must be 100x harder to convey in a video, heh. "Wow, I really feel it..."