What is the OPENGATE Detection System?
OPENGATE operates using a sophisticated magnetic field detection system. As individuals walk through the open-frame design, the device continuously scans for large metal objects consistent with firearms or similar threats. OPENGATE is currently utilized by schools in Cheatham and Rutherford counties and numerous others across the country. The technology will begin at Northeast and Rossview high schools during the 2025-26 school year. CMCSS purchased OPENGATE weapons detection systems, utilizing TN Safe Schools Act grant funds. The district will continue to invest grant funds to expand the technology to additional schools in the future. Individual schools will communicate with families ahead of launching the technology to share more information and logistics.
All persons, personal belongings, lockers, and vehicles on school property at any time are subject to be searched for drugs, drug paraphernalia, dangerous weapons, or any property that is unlawful to carry on our campuses. Announced and unannounced security sweeps and audits by law enforcement can and will be utilized on our campuses to keep our schools safe.
What is Evolv?
The Montgomery County Sheriff’s Office (MCSO) is partnering with CMCSS to pilot Evolv technologies at Northwest High school.
Unlike metal detectors, manual bag checks, wanding, and other traditional solutions, Evolv offers an innovative and accelerated approach to physical security screening and weapons detection through enhanced sensors and artificial intelligence (AI).
MCSO received funding for the pilot and will provide additional School Resource Officers for the implementation at the pilot schools. Northwest High School was selected to pilot the system first because it has the most streamlined entrance points and less complex logistics to begin testing the model. Rossview High School was chosen as the second pilot site since it has the largest student population and more complex logistics. The transition to Rossview High is planned for mid-year. Data and feedback from the two contrasting test sites will guide MCSO and CMCSS for future plans.
Many families have likely encountered Evolv technologies at a venue like Nissan Stadium, GEODIS Park, or other stadiums and arenas. Although CMCSS will be one of the first in the state to pilot Evolv on school campuses, several school systems across the country utilize this technology. The pilot of Evolv technologies will be one of several enhancements as we continue to explore opportunities to proactively improve our layers of safety and security in our schools.
The Technology
Evolv Express is an advanced weapons screener that uses artificial intelligence and sensor technology to instantly distinguish everyday items from potential threats, such as a phone from a firearm. Unlike a metal detector or upgraded metal detectors, the Evolv Express is not looking for metal, it is looking for weapons and component parts of weapons only – and pinpoints where a potential threat is on a person.
Frequently Asked Questions About Weapons Detection Systems
Detection systems use AI and advanced sensors to distinguish between weapons and everyday items as people move through at their own pace.
Is the technology safe?
Yes. The systems use extremely low-frequency radio waves (ELF) that are in the range used by some Electronic Anti-Theft Systems (EAS), widely deployed in retail settings for loss prevention.
No. Evolv Express and OPENGATE do not use facial recognition technology. The technology is focused on distinguishing weapons from personal items. The weapons detection systems used by CMCSS do not collect, process, or use any personally identifiable information. If the system detects a potential threat, it alarms, and that threat is examined. If the system does not detect a potential threat, it will not alarm, and the individual walks right through. The system evaluates items passing through, not people, to determine if there may be a threat.
The data generated is statistical data, such as the number of people passing through. The systems do not collect any personally identifying information.
The systems are looking for weapons that can cause mass casualty damage, such as guns, large tactical knives, and explosives. No security system is 100% perfect. Effective security involves a layered approach of people, process, and technology – all working together.