SURVEILLANCE

[noun] [U] - the careful watching of someone who is thought likely to do something wrong, or of somewhere where it is thought likely that something wrong might be doneShe claimed that her telephone had been tapped and that she was under surveillance.The police have kept the nightclub under surveillance because of suspected illegal drug activity.Farmers are calling for more surveillance of the nation's food supply.The police are using an electronic surveillance system to catch drivers who commit motoring offences.A close watch is being kept on the area by surveillance aircraft/satellites.More banks are now installing surveillance cameras.