Touch tracer was originally designed to be a debug application for home build multitouch devices. A special version was created for the NEMO Science Center to demonstrate how camera based multitouch technology works by displaying the image processing pipeline.
Source code
A TUIO version of Touchtracer can be found at google code http://code.google.com/p/touchsuite/
Used technologies: C/C++, OpenGL/GLUT, TUIO.
Download
[download#5#size]Videos
Touch Tracer on the UvA MTT
FTIR Multitouch – Touch Tracer v0.2 (12-05-2007)
FTIR Multitouch – Howto / Touch Tracer v0.1 (01-05-2007)