What is the role of surveillance cameras in security?

Surveillance cameras play a crucial role in security by monitoring and recording activities, which serves both as a means of deterrence and a source of evidence. The presence of cameras can discourage individuals from engaging in unlawful behavior, knowing they are being watched and recorded. In the event that an incident occurs, the recorded footage can provide valuable evidence for investigations, legal proceedings, or insurance claims. Surveillance cameras enhance situational awareness and help security personnel and law enforcement agencies respond more effectively to any incidents.

The other options do not fully capture the primary role of surveillance. While cameras may intimidate potential trespassers, their main purpose goes beyond simply frightening people; it involves active monitoring and evidence collection. Limiting access is generally a function of physical barriers or controlled entry systems, not cameras. Lastly, while surveillance cameras can supplement security measures, they do not replace the need for trained security personnel, who provide critical human judgment and response capabilities that cameras alone cannot offer.