Visual Touchscreens is a separate company started by the principal of Torq Software to research and develop new ways of working with computers. Its Touch Computing for all of your displays... including the ones you can't touch.
Check it out. Its interesting and valuable work for the future of computing. The easiest way to get up to speed on the concept is to view the videos available on the site. The introduction video is shown below. As this is new technology an email address may be requested depending on the video being displayed.