What distinguishes a detection device from a deterrent device?

A detection device serves the critical purpose of alerting to the presence of an incident or breach as it occurs, providing instant awareness that enables a prompt response. This can include alarms, cameras, or sensors that notify security personnel or systems about unauthorized access or other security breaches. Its primary function is to detect and report on potential threats or incidents.

On the other hand, a deterrent device's role is to prevent incidents from occurring in the first place. This could include measures like security fencing, signage, or visible security personnel, which can discourage potential intruders from attempting to breach a facility due to fear of being caught or facing consequences. The effectiveness of deterrents lies in their ability to create an environment that dissuades criminal activity.

This distinction is crucial for understanding security measures: detection devices provide the ability to respond after an incident is identified, while deterrent devices aim to proactively mitigate the likelihood of such incidents happening at all.