Hi,
The main goal is to be able to create a transparent overlay so any monitor (Plasma/LCD/etc) can be used as multitouch. I don’t know the feasibility of this idea nor do I know if it would actually work. Any input would be fine.
So the basic idea is to make a digital matrix which are currently used like in LCD’s out of ITO. So you could have ITO acrylic, in rows and column. The 2 layers will form intersection points that make a node. So its “anode” and “cathode” layer basically. A touch will create a resistance/conductance. The problem is detecting this change at each node, and still have it transparent.
So for that we use another layer of transparent TFT or transparent transistors: here’s an article:
http://www.mccormick.northwestern.edu/news/articles/245
This is not the nano-wire stuff (i think) so it should be low-cost and they say its low-cost (hopefully). I don’t know I might talk to the university but I’m sure its expensive though. If you guys have any idea of transparent transistors or basically a transparent circuit that is all that is needed.
but if it is low-cost. Then basically you feed all the transistors the a microcontroller and that to the computer. All layers of your overlay are transparent!!! Man I hope this stuff comes cheap!
Here are some amateur attachments. There is no need to make a frame of IR’s or anything, or any camera. Thats why it is a “completely different idea” with respect to the “methods” listed on this forum. I’m sure some company had this idea, but after much research (because I really want an overlay 
) this is what I came up with.
And you don’t have to tell me that the OBVIOUS problem is the spatial resolution of the nodes but I’m sure they can be pretty close (its an old technique so they should have the capability) for it to be a “nonissue”.
And you know what is cool: It’ll be as thin as those OLED tv’s you’ve seen (sony?) or even thinner potentially. Now I hope this comes cheap!
