Monitoring is a general term that refers to the systematic, continual, and active or passive observation of persons, places, things, or processes. By contrast surveillance is used to indicate targeted monitoring of activities by police or security...

Surveillance equipment allows for the continous monitoring of people and places, the desire for which has existed forever. In some cases, the observer wishes to be hidden from the people being watched or listened to; examples include hidden cameras and...

The ongoing, systematic collection, analysis and interpretation of health data essential for planning, implementing and evaluating public health practice. The information derived from the surveillance must be disseminated promptly to those who need to...

Surveillance conducted by means of scientific devices that enhance hearing or seeing the subject’s activities—may involve electronic eavesdropping devices (wiretaps, pen registers), electronic tracking devices (beepers), or assorted visual...

Surveillance in which there is little or no attempt at concealment; the subject may be and most likely is aware of the surveillance, but must not be lost (also called rough...

A secretive, continuous, and sometimes periodic visual documentation of activities involving persons, places, or objects of importance to an...

The observation of a person, place, or thing—generally, but not necessarily, in an unobtrusive...

Surveillance is the monitoring of behavior. Systems surveillance is the process of monitoring the behavior of people, objects or processes within systems for conformity to expected or desired norms in trusted systems for security or social control....