The Digits blog at the Wall Street Journal has an article on an expansion (very large expansion) of the HP TouchSmart technology.  It’s entitled “HP Testing a Touchless “Wall of Touch”  It’s a good read, but the video below gives the details and shows the cool technology.

“… an interactive touch screen wall comprised of up to nine 43 inch to 46 inch, 1.5 inch thick panels with a resolution of 1080p. Driven by an HP Z800 workstation”

Enjoy!