Check out this video of a New York University project using a multi-input touch screen. Screen allows Minority Report like interaction with applications. No word on when this technology will reach the consumer market, but I’m sure it will be some time.
Our technique is force-sensitive, and provides unprecedented resolution and scalability, allowing us to create sophisticated multi-point widgets for applications large enough to accommodate both hands and multiple users.
The drafting table style implementation shown here measures 36″x27″, is rear-projected, and has a sensing resolution of better than 0.1″ at 50Hz. Stroke event information is sent to applications using the lightweight OSC protocol over UDP.