Avigilon Presence Detection: Discreet Surveillance While Maintaining Privacy

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Security is a necessity for Alberta businesses, but there are limits to what tools you can use, and where.  For example, provincial privacy legislation states that security cameras can’t be used in areas where there is a heightened expectation of privacy, like changerooms or restrooms.   However, security staff needs to know if people are in these rooms.  That information can help them prevent theft after hours and locate missing personnel during emergency evacuations.

Avigilon’s Presence Detection is a solution for those hard-to-monitor areas.  To learn more or request a demo, you can Contact Us.  You can click here to view the technical specifications, or simply keep reading to learn more.

What is the Avigilon Presence Detector?

The Avigilon Presence Detector (APD) is far more than your standard motion detector.  It combines the self-learning analytics that power Avigilon’s security cameras with impulse radar technology.  The result is a sensor that can detect the presence of a person, even if they are motionless.  The APD can also detect a presence even if the person is partially or completely hidden by blankets, cardboard, wood paneling, or drywall.

And, because it is supported by Avigilon’s self-learning analytics software, the APD will quickly learn what type of movement is normal and when such motion or presences can be expected.  Having this kind of specific information means fewer false alarms and less time wasted by your security staff.

How Does the Avigilon Presence Detector Work?

The APD emits radar pulses to scan its environment to a radius of 9 meters or 29.52 feet. Impulse radar is a low power, ultra-wideband, short-range, radar transmission signal.  It operates on a much wider frequency band than conventional radar systems, making it far more effective at detecting people.

Why Not Use a Security Camera?

There are indoor environments with a reasonably heightened expectation of privacy.  Restrooms and changerooms are two examples, but ATM vestibules in banks are another.  In pharmacies and many parts of a hospital, the need for both privacy and monitoring also exists. In these types of environments, a considerable amount of sensitive, private information is shared, and the presence of a surveillance camera could make customers and patients question if their privacy was being respected.  By using a radar-based tool like the Avigilon Presence Detector, you can strike the balance between privacy and security.

Just like Avigilon security cameras, the Presence Detector can be integrated into the Avigilon Control Centre.  Any alerts or alarms will appear on your dashboard, allowing your team to deploy an immediate security response, bringing incidents in hard to monitor areas to a swift and safe resolution.

Without a solution that factors in the need for privacy, a dedicated security presence would have to be posted near sensitive areas to guarantee safety and security for staff, customers, visitors, and patients.  While there would be some benefit in the reduced response time, the added expense of having so many security guards posted near sensitive areas (rather than patrolling) may not provide the return you would need it to.

Getting Started  

The APD serves as a valuable complement to your security solution.  It is a security presence when thermal/IR or standard video cameras can’t be used, and the deployment of dedicated security personnel would be inefficient.

If you’d like to make the APD part of your security solution, or if you simply have some questions, Contact Us.  Our Account Managers and Service Technicians are here to help.


Tridon is a full solution Telecom Systems Integrator with CSA certification and licensed by APEGA.  Our Engineering, Service, and Tower Divisions collaborate with customers to build engineered solutions including communications systems design, tower inspections and co-location, wireless broadband, fiber optic cabling, site security, and two-way radio communication.

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