I did a little research on this, and it has many applications outside OHS. It uses global positioning systems (GPS), RFID, Wi-Fi, or cellular data to set boundaries. Kinda like the fenceless dog boundaries without the collar, though maybe it could be used in the prison systems, like in the movie Running Man 8). Marketing, timekeeping, fleet tracking (waste shipping applications), security, and worker safety. I don't see how it could be used inside a facility.
NSC Releases Report on Role of Geofencing in Workplace Safety
https://ohsonline.com/Articles/2024/05/10/NSC-Releases-Report-on-Geofencings-Role-in-Workplace-Safety.aspx