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See Inside December 2009

The Omnipotence Machines

Tiny, ubiquitous sensors will allow us to index the physical world the way the Web maps cyberspace

Earlier this year Hewlett-Packard announced the launch of its Central Nervous System for the Earth (CeNSE) project, a 10-year effort to embed up to a trillion pushpin-size sensors across the planet. Technologists say that the information gathered by this kind of ubiquitous sensing network could change our knowledge of the world as profoundly as the Internet has changed business. “People had no idea the Web was coming,” says technology forecaster Paul Saffo. “We are at that moment now with ubiquitous sensing. There is quite an astonishing revolution just around the corner.”

The spread of versatile sensors, or “motes,” and the ability of computers to analyze and either recommend or initiate responses to the data they generate, will not merely enhance our understanding of nature. It could lead to buildings that manage their own energy use, bridges that flag engineers when in need of repair, cars that track traffic patterns and detect potholes, and home security systems that distinguish between the footfalls of an intruder and the dog, to name a few.

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