What is a major function of motion detectors in physical security?

Motion detectors play a vital role in physical security by serving the primary purpose of detecting and alerting to unauthorized movement in restricted areas. They utilize various technologies, such as infrared sensors, microwave sensors, or video analysis, to identify movement that may indicate a security breach or unauthorized access. When motion is detected, these devices can trigger alarms, send notifications to security personnel, or activate surveillance systems to ensure an immediate response.

This capability is essential for protecting sensitive locations, such as data centers, financial institutions, or restricted access zones within facilities. By promptly detecting intruders or suspicious activity, motion detectors help in preventing theft, vandalism, or other security incidents, thereby maintaining a secure environment.

Given this function, other options may touch upon related aspects of security management but do not capture the primary purpose of motion detectors in a security context. For example, while enhancing employee productivity or streamlining reports might be ancillary benefits of a secure environment, they do not directly relate to the core operational function of motion detectors, which is to monitor and detect unauthorized movements effectively.