What is the role of surveillance systems in security?

Surveillance systems play a crucial role in security by enhancing visibility and deterring criminal activity. Their primary purpose is to monitor specific areas and provide a visual record of events, which can help security personnel identify potential threats or unusual behavior in real-time. The presence of surveillance cameras often acts as a deterrent, discouraging criminal actions when individuals know they are being watched. This proactive measure not only helps to prevent crimes before they occur but also aids in the quick response to incidents that may happen despite the deterrent. Furthermore, recorded footage can serve as vital evidence in investigations and prosecutions, further emphasizing the importance of surveillance in maintaining security.

Other options, while relevant in different contexts, do not align with the primary function of surveillance systems in a security framework. Surveillance is not primarily designed to trap criminals, track employee performance, or manage building maintenance, even though these activities may occur within an organization's broader operational scope.