Making a multitouch screen prototype

After the experience with "Frontera" which worked with a kind of gesture tracking that is more similar to the single touch interaction, I'm experimenting with other forms of multitouch screen interaction. The first one I'm looking into is FTIR, which is becoming very widely used. Great tutorials about how to make your own multitouch screen can be found online. I'm using one that I found while surfing this site:
http://www.nuigroup.com

Attached is a picture of the point of the process that I'm in now. Basically, I'm about to finish the screen, I've soldered and placed the leds and the resistors , I have the polished acrylic board, and I only have to put everything together and connect it to the software part. (I already tested it using the computer's internal connectors as a power source, and placing the camera under the glass).I will be making posts on the progress of this. I'm really looking forward to the results of this first approach to an alternative technique.
More to come...