Geofences & Security Perimeters Overview

A geofence is a virtual boundary around a project, yard or office site, that triggers actions and alerts when an asset with a Tenna tracker enters or exits. Geofences are important for capturing Site Utilization. All sites require a geofence to be created when the site is created. You can create additional geofence levels and security perimeters in and around your sites, as needed.

Permission Requirements:

  • Users with the View Geofences and Security Perimeters permission enabled are able to view the Geofences and Security Perimeters grids and maps in Tenna.
  • Users with the Manage Geofences and Security Perimeters permission enabled are able to create, edit, or delete Geofences and Security Perimeters and their alerts/notifications.

Note: As of November 14, 2025, the designation of geofences as a Boundary, Zone, or Fence has been deprecated. Existing Boundaries are now Level 1 Geofences, Zones are Level 2 Geofences, and existing Fences are now Security Perimeters.

Geofences

Geofences are virtual boundaries created around or in your Site (Project, Yard or Office). Geofences are used to capture and calculate utilization, as well as triggering asset assignment.

Geofences can be created in up to 6 levels, allowing for more granular tracking within a Site. The following are important details about Geofence levels:

  • A Site must have at Level 1 Geofence to be created. A Site may have multiple Level 1 Geofences, as long as they are not overlapping.
  • There is a parent-child relationship among Geofence levels, meaning a Level 1 Geofence may contain (overlap) with Level 2, 3, 4, 5, and 6 Geofences. However, a Geofence cannot overlap at the same level. (i.e., a Level 1 Geofence cannot overlap with another Level 1 Geofence).

When an Asset* breaches a Geofence:

  • The asset’s Site is automatically updated to the Site associated with that Geofence level. When the Geofence is exited, the Site will change to No Site or to another Site (if another Geofence is breached upon exit).
  • Activity for that asset while inside that Geofence level is used to calculate Site Utilization for the Site associated with the Geofence.
  • A timestamp is recorded for entrance and exit of each Geofence level for that Asset. This information is available in the Geofence Enter/Exit Report.
  • If configured, an alert is sent to notify configured recipients of the entrance and exit.

*Assets with trackers that report trip/cycle data.

Security Perimeters

Note: As of November 14, 2025, the term Fence has been deprecated. Existing Fences are now Security Perimeters.

A Security Perimeter is a neutral geofence that is unrelated to any site type (project, yard, office) or accounting job. Security Perimeters are created simply to track enters and exits, as well as be notified of breaches.

For example, say your company only has projects in the state of Texas. You would like to be notified if any assets leaves the state of Texas, so you draw a Security Perimeter around the state.

Security Perimeters differ from Geofence Levels in a few ways. Security Perimeters:

  • Do not impact utilization or cost/billing. They are used solely for tracking asset movement in and out and generating alerts.
  • Only have one level (no levels/hierarchy).
  • Can be placed anywhere on the map and may overlap with each other or with Geofences since they are not used for utilization or billing.
  • Have their own configurable enter and exit alerts.
  • Cannot have Assets transferred or assigned to it.

When an Asset* breaches a Security Perimeter:

  • A timestamp is recorded for entrance and exit of the Security Perimeter for that Asset. This information is available in the Enter &Exit Report and Enter & Exit Detail Report.
  • If configured, an alert is sent to notify configured recipients of the entrance and exit.

*Assets with trackers that report trip/cycle data.

To learn more about creating a Security Perimeter, view How to Create, View, Edit or Delete a Geofence or Security Perimeter (Desktop).

How to View Geofences and Security Perimeters

To access Geofences and Security Perimeters, and their alerts/notifications, click Geofences on the left-side navigation. Then, click Geofences or Security Perimeters.

Each grid has a tab for Existing Geofences or Security Perimeters, and a tab for Alerts.

From these pages, users can create, view, edit, or delete Geofences and Security Perimeters and their alerts.

Alerts for Geofences and Security Perimeters

All breaches (enter or exit) of a Geofence and Security Perimeter are recorded in Tenna. There may be instances, like after hours or weekends, that you would like to be immediately alerted if a Geofence or Security Perimeter is breached.

Alerts can be configured individually for both Geofences (down to individual level, if you prefer) or Security Perimeters.

Enter & Exit Reports

As assets pass in and out of Geofences or Security Perimeters, their movements are recorded for historical record-keeping, as well as job costs and billing. The Enter& Exit Report is a Tenna-default report that shows a log of breaches of Geofences and Security Perimeters.  The Enter & Exit Detail Report allows you to break down breaches on the asset level.

See Enter & Exit Report (Desktop) for further details.

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