His proof-of-concept was crafted from 22 webcams and some custom code, but when Kinect came out, he realized that he could use the sensor bar instead.

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Plug in the Wii-style sensor bar, dust off your old Wii Remote or Balance Board and you'll find everything syncs and works just as it did before.

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Customers who did not buy these along with the original edition of the Wii will have to purchase them separately with the exception of the US where a sensor bar is included.

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For whatever reason, the company doesn't want those ports shown, but we can tell you what they consist of: AC adapter, AV multiout, sensor bar, HDMI out and what looks like two ports for USB.

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Another kind of sensor technology, the nano bar code, is being developed by Nanoplex Technologies in California.

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Lastly, there's a capacitive sensor underneath the keyboard, allowing the laptop's touchpad to be disabled automatically while you're typing. (Naturally, this works best if the trackpad is also made by Synaptics.) The company is also developing a feature in which the space bar could be a touch sensor in and of itself, with support for functions like autocomplete.

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