This is what the article says:

"The software is designed to scan faces, check them against a database, and alert school officials if it detects a “flagged person” — which, according to the newspaper, could be anything from a suspended student to a known sex offender.

In addition to scanning faces, the software is also designed to detect 10 types of guns." [Source](https://futurism.com/us-public-school-facial-recognition)