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A geofence is a virtual geographic boundary based on GPS, that enables OnGuard to trigger an event when a mobile device enters or leaves the defined area. This article provides a general overview on how Geofences work in OnGuard. The three main geofences are:

  1. Check-in
  2. Life Check
  3. Danger

How Geofences work

As soon as the end user with his mobile device enters the boundary into the geofence, he fulfills the criteria of being within the defined geofence zone. This change will trigger an event. In the example below for the check-in geofence, it will register the time and location when the user entered the zone.

After leaving the geofence, the user goes from the state of fulfilling the criteria of being within the defined geofence to not fulfilling it anymore. This can trigger another event. In the example of the check-in it registers the time and location of the user exiting this geofence.


Composite Geofence (for non-circular areas)

Geofences in OnGuard are currently only circular defined by a center point and a specified radius. To monitor non-circular areas, use child locations to add more circular geofences to your geofence to approximately cover the needed shape.

Composite geofences composed of child locations can be used to monitor a non-circular dangerous large-scale area such as in a mine. 

Life Check Zones, Danger Zones and Normal geofences are supported with this.

composite geofences

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