http://www.cnn.com/2004/TECH/interne....ap/index.html
A police officer stops you on the street, then taps something into a device in the palm of his hand.
The next minute, he knows who your relatives are, who lives in your house, who your neighbors are, the kind of car you drive or boat you own, whether you've been sued and various other tidbits about your life.
Science fiction? Hardly..........