How AI could be used to detect guns before school shootings

Evolv uses a combination of ultra-low frequency electromagnetic fields and advanced sensors to detect concealed weapons as people walk through a portal.

The high-speed screening system is already in use at several sports arenas, entertainment venues and theme parks, the Washington Post reported.

North Carolina’s Charlotte-Mecklenburg school system, with 150,000 students, is installing the scanners at a cost of $1.7 million over three years.

It’s not foolproof, however: Evolv’s system generated false positives from certain Google Chromebook laptops, according to an analysis by IPVM, a security-industry trade publication.