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Ever wondered how the motion-sensing thingamajig from Microsoft – the Kinect – detects motion so accurately and quickly? Well, even if you didn’t, you’ll be a little surprised at how it works.

Kinect

The Kinect accessory emits thousands upon thousands of little pin pricks of infrared light. These pin pricks form a map which is changed from the original when a person enters it and moves around / gestures. This information is readily picked up by Kinect which then sends it to the console for processing. The end result then turns up on your TV mere milliseconds later.

The interesting thing here is that the pin pricks are only visible with night vision goggles or through an IR camera, as seen in the video below:

[via WinRumors]

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