“In computing, the vision always precedes the reality by a decade or more. The pattern has held true from the personal computer to the Internet, as it takes time, brainpower and investment to conquer the scientific and economic obstacles to nudging a game-changing technology toward the mainstream.

The same pattern, according to scientists in universities and corporate laboratories, is unfolding in the field of sensor-based computing. Years ago, enthusiasts predicted the coming of “smart dust” — tiny digital sensors, strewn around the globe, gathering all sorts of information and communicating with powerful computer networks to monitor, measure and understand the physical world in new ways. But this intriguing vision seemed plucked from the realm of science fiction.”

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http://www.nytimes.com/2010/01/31/business/31unboxed.html