We've blogged already about interaction designers starting to get to grips with the Xbox Kinect. Here's the ever-inventive Chris O'Shea with his prototype for a Kinect air guitar

O'Shea says he did it "to explore what the potential of interactive music games could be in the future and also just to experiment with the Kinect. It only works if you are facing the camera front on. Then it uses one hand as the neck of the guitar, drawing a virtual line from the neck through the person centroid to create the guitar line. The other hand is tracked to see if it passes through this line, strumming the guitar. The neck hand position controls the chord."

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