Hi,
I search someone who can be able to recreate (or find but i’ve search a long time) a software which can use the setup proposed here :
http://research.microsoft.com/en-us/um/people/awilson/publications/WilsonUIST2005/Wilson%20PlayAnywhere%20UIST%202005.pdf

In fact, the idea is simple for a person who has a little knowledge in picture processing (which I haven’t!!) : the software has to be able to detect when a shadow and an object encounter then pinpoint the location of the touch.

I’m not creating anything here just presenting an old and forgotten idea (2005) which can be a easy way to multitouch screen for a lot of member of the nuigroup!