geofence
noun/ˈdʒiːəʊfens/
/ˈdʒiːəʊfens/
(also geo-fence)
(specialist)- a virtual line that you draw around a physical area so that a signal can be sent to a mobile electronic device such as a phone inside this line or when this line is crossed
- You can even set up a geofence around a truck and receive an alert if your truck leaves the area.
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geofence