This clip features the Kineme MultitouchPatch in action.
The Quartz Composer patch and compositions are available at http://kineme.net/node/6105
Multitouch capable hardware permits one to interact with a device by placing two or more fingers directly onto the surface of the device. The patch provides a structure full of touch sensor data from an internal trackpad or Magic Mouse — position, velocity, angle, and size of up to eleven simultaneous points.
(The accompanying music is from a remix version of a song of mine, "Shines".)