The future of digital technology

Watch out for RFIDs - radio frequency identification devices - the size of a grain of sand. Expect more than 100 billion of these minute computer systems to be used every year by 2010, in manufacturing, wholesale, distribution and retail as well as by airlines in luggage tracing, in health care and many other settings.

They need no battery, can last up to 100 years, and suck power out of the places where they operate using electromagnetic waves.