China Enacting a High-Tech Plan to Track People (Published 2007)Law enforcement technology is being introduced to monitor people, like these citizens from Hong Kong, crossing into Shenzhen.Credit...Ariana Lindquist for The New York Times SHENZHEN, China, Aug. 9 — At least 20,000 police surveillance cameras are being installed along streets here in southern China and will soon be guided by sophisticated computer software from an American-financed company to rec
