This is an absolutely stunning demonstration. Basically, Johnny Lee creates a sensor by attaching a tiny light to a pen shell, then uses the Wii remote (Wii-mote) to track the movments of the pen. This allows him to turn any surface - a wall, a desktop, a computer screen - into a fully interactive computer screen and writing tablet. Brilliant. Using two-such pens also creates a multi-touch tablet PC, which allows you to expand and rotate objects. Here is the link to the software - those of you who have Wii-motes, let's see what you can do with them!
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