Mitsubishi Research Labs (MERL)

Mitsubishi Electric Research Laboratories is the North American arm of the Mitsubishi Electric Corporation's Corporate R&D Group. A long time technical contributor to the computer graphic community, MERL conducts application-motivated research and development in computer and communication technologies. A recent development is MERL's DiamondTouch table, the first multi-user touch technology.

https://www.merl.com

Diamond Touch

The MERL DiamondTouch table is a multi-user, debris-tolerant, touch-and-gesture-activated screen for supporting small group collaboration, including gaming. It is the first touch screen that allows multiple users to interact simultaneously, and it knows who is who, making it perfect for multi-user touch-interactive arcade games.

https://www.merl.com/projects/DiamondTouch

The DiamondTouch developer's kit includes a relevant SDK.