
I will include this drawing in a presentation at my work. (Creating an illustrator image for this presentation is not needed and would be overkill, really, the presentation does not matter as much as the idea.) At work I am proposing to build and install a multi-touch display for our foyer at minimal expense. From a quick Google search, I found various "how to" experiments for building this.
http://johnnylee.net/
This link is to Johnny Chung Lee's website, he was the one who created this "hack."
http://www.instructables.com/
This next link to instructables.com is a site where one can find how to's for many experiments. Here is where I found instructions on how to build the multi-touch screen.