Just watched the videos showing how Microsoft’s latest, the Touch Wall, works in real conditions. I am very impressed with the whole thing, especially since it can be up and running for a few hundred dollars worth of hardware (and software naturally), although I doubt it will be available for so small an amount once officially released. Basically, the panel which is used as a projection area is scanned by small cameras found at the bottom of it facing upwards. Every time a user approaches the screen, they know it, and begin tracking movements and execute appropriate actions withing the interface.

Here’s a video featuring Bill Gates using the Touch Wall at their annual CEO Summit (you’ll need Silverlight to view this), and here’s another video of Michael Arrington who got a chance to test Touch Wall first hand. I’ll embed this video here, although it wouldn’t hurt to see the post on TechCrunch.

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