In the image below, the purple square on the bridge is an example of a geo-fence that I use for testing and demonstrations. This is a marquee feature in most location-based services, as geo-fences are valuable in so many different businesses and other cases. A geo-fence is a set of coordinates that define an area (in our case a rectangular area). Once a geo-fence is setup, the system can then trigger an alarm when a device goes inside or outside of that defined area. This feature has numerous obvious benefits, such as being able to see when someone is on the move from their current location, or when they have arrived somewhere.
First the When
In a work situation, you might want to have a record or be notified when one of your employees returns to the warehouse or work center. A high number of occurrences might indicate that they did not get the correct materials or tools before going on a job. Or if you have worker who ‘report to work’ at a job site you can see when they arrive (or leave) the designated area. Frequently when I am telling a potential customer about the benefits of Display Tracks I get a response “What about my teenagers ?” You could certainly put a geo-fence around their school to notify you when they arrive or depart.
Now the How
To ‘Add a Geo-Fence’ first select the device or group of devices that you wish to add the geo-fence to, then right-click on the map where you wish to place your geo-fence. You will then notice a rectangle appear, as well as an info window prompting you for the geo-fence’s colors and name. To adjust the geo-fence to your preferred size, grab the resize nodes and resize the geo-fence to fit perfectly around the area you wish to enclose. Once you have named it and set it over the correct area, you can hit the ‘Save’ button and the geo-fence should be saved to the system for the selected device. (Note: Device geo-fences will only appear on the map if the ‘Show Geo-fences’ option is checked. To set this, goto the ‘Map Options’ Component and check the ‘Show Geo-fences’ checkbox.)
To see all of the geo-fences that are associated with the selected device or group of devices, goto the ‘Geo-fences’ tab in the ‘Device Information’ component. Here you can also delete geo-fences by selecting the geo-fence checkboxes that you wish to delete and click the ‘Delete Geo-fence’ button.
Geo-fences can be turned into an alarm event and will notify you anytime the geo-fence is breached by its associated device. Alarms can be set in the ‘Set Alarms’ tab in the Device Information component. In the Set Alarm tab, you can activate the geo-fence alarm by checking the Geo-fence checkbox. This will result in an e-mail being sent to the e-mail associated with the device.