"Wall Street analysts now follow the growth of companies that install surveillance systems providing Chinese police stations with 24-hour video feeds from nearby Internet cafes. Hedge fund money from the United States has paid for the development of not just better video cameras, but face-recognition software and even newer behavior-recognition software designed to spot the beginnings of a street protest and notify police."
I particularly liked the Chinese defence of their growing businesses:
"Executives of Chinese surveillance companies say they are helping their government reduce street crime, preserve social stability and prevent terrorism. They note that London has a more sophisticated surveillance system, although the Chinese system will soon be far more extensive.
"Wall Street executives also defend the industry as necessary to keep the peace at a time of rapid change in China. They point out that New York has begun experimenting with surveillance cameras in Lower Manhattan and other areas of the city, and that corporations make broad use of surveillance cameras in places like convenience stores and automated teller machines."