Outdoor Sensors Extend Gunshot Detection to Campus Perimeters
New machine-learning technology identifies firearm discharges in parking lots and courtyards to provide earlier threat warnings.
- By Jesse Jacobs
- March 20, 2026
Shooter Detection Systems has launched a new outdoor gunshot detection system designed to identify threats before they reach building interiors.
The system, known as SDS Perimeter, follows a beta testing period and a development initiative sponsored by the Department of Homeland Security. The technology aims to secure "soft targets" on campuses, such as parking areas, courtyards, and building entrances, where nearly half of active shooter incidents occur.
The outdoor sensors use a dual-factor authentication process to ensure accuracy. By combining acoustic sensors with infrared muzzle flash detection, the system can distinguish gunfire from common outdoor background noises. This multi-factor approach is powered by machine-learning algorithms to reduce false alarms in complex environments.
“Organizations today are looking for security solutions that provide earlier awareness and actionable intelligence,” said Rich Onofrio, chief technology officer for Shooter Detection Systems.
Onofrio noted that the technology allows security teams to identify and respond to gunfire before a threat reaches a populated area. Because the sensors do not record audio or conversations, officials stated the system does not raise privacy or surveillance concerns for students or staff.
The outdoor units integrate with existing campus security infrastructure, including video management systems, access control, and mass notification platforms. This allows for an automated, layered response that can lock down buildings or alert authorities the moment a shot is detected outside.
The system will be featured at the upcoming ISC West security conference, where the company will demonstrate its latest software enhancements for real-time crime centers.