Essentially, they're projecting onto a sheet of specially treated glass sitting in front of the user. The 'multi touch' is probably a 2D grid of laser beams, which are broken when he pushes his hands forward beyond a certain point.
Now that we've thrown 'em off the trail, use the form below to get in touch with the people at Engadget. Please fill in all of the required fields because they're required.
Essentially, they're projecting onto a sheet of specially treated glass sitting in front of the user. The 'multi touch' is probably a 2D grid of laser beams, which are broken when he pushes his hands forward beyond a certain point.