We use the NB IoT network in 4 mains ways

1: for programming the NB IoT smart locks to work for limited time periods/authorization

2: for a live audit/live events - know who has opened the door at what time in our software/apps

3: for remote unlocking (from software and apps)

4: Notifications of activity with supporting sensors (e.g by adding a tampering sensor, or a motion sensor, or a light/proximity sensor, we can know if someone is trying to tamper with a lock, is inside a room, or if the door is closed)