Smart Screens Thanks to renewed interest in hands-on computing, researchers have continued to push the boundaries of displays and interfaces. This year, researchers at Microsoft demoed a back-of-the-screen touch pad, and a startup based in New York called Perceptive Pixel came up with an intuitive way of sliding an on-screen object underneath another based on the touch force. (See "What's Next for Computer Interfaces?") Touch screens came down in cost, becoming available to the average hacker. Engineers at Nordt, a research studio based in New York, introduced a product called TouchKit, which lets anyone make and modify his or her own touch-screen table for less than $1,000. (See "Open-Source, Multitouch Display.") And Microsoft researchers demonstrated an easy, cheap way to turn a normal display into a multitouch surface. (See "A Low-Cost Multitouch Screen.") Taking things one step fur Read the full article