Final answer:
A perimeter intrusion detection system (PIDS) is used exclusively in conjunction with fences to detect unauthorized entry. Examples of PIDS technologies include buried cable sensors and microwave sensors.
Step-by-step explanation:
An intrusion detection system used exclusively in conjunction with fences is called a perimeter intrusion detection system (PIDS).
PIDS is a technology used to detect unauthorized entry into a restricted area or perimeter by sensing intrusions along physical barriers such as fences, walls, or gates.
Examples of PIDS technologies include buried cable sensors, which create an electric field around a perimeter and detect disturbances caused by people or vehicles, and microwave sensors that emit and receive microwave radiation to create a detection zone.