Jeff Han gave an amazing talk and demo at Etech - pictured here, LCARS multi-tounch interface!

While touch sensing is commonplace for single points of contact, multi-touch systems enables a user to interact with a system with more than one finger at a time, allowing for the use of both hands along with chording gestures. These kinds of interactions hold tremendous potential for advances in efficiency, usability, and intuitiveness. Multi-touch systems are inherently also able to accommodate multiple users simultaneously, which is especially useful for collaborative scenarios such as interactive walls and tabletops.

• Video of multi-touch - Link.
• Photo gallery of the multi-touch gear - Link.
• Transcript of Jeff Han's talk - Link.
• I shot some video, was far away - but here it is - Link.