What is an example of a physical barrier in a security system?

A physical barrier in a security system refers to a tangible obstacle that helps prevent unauthorized access to an area or property. Fencing or gates serve this purpose by creating a boundary that can deter intruders, control access points, and define the perimeter of a secured area. They are essential in increasing the physical security of a location, as they not only serve as a visual deterrent but can also be designed to withstand attempts at breach.

In contrast, alarm control panels, security cameras, and motion detectors fall under categories of electronic or surveillance measures rather than physical barriers. Alarm control panels manage and monitor alarm systems, security cameras provide visual monitoring, and motion detectors trigger alerts based on movement but do not physically impede entry. Thus, fencing or gates stand out as the true example of a physical barrier within this context.