A Perimeter Intrusion Detection System (PIDS) is a security technology designed to detect unauthorized access or breaches along the perimeter of a facility, property, or restricted area. These systems use a combination of sensors, such as infrared, microwave, seismic, fiber-optic, and radar technologies, to monitor and identify suspicious movements or intrusions. PIDS are often integrated with video surveillance, alarms, and security management systems to provide real-time alerts and enhance situational awareness. They are widely used in military bases, critical infrastructure, airports, data centers, and industrial facilities to provide the first line of defense against potential threats.