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geo- +‎ fence


geofence (plural geofences)

  1. A virtual perimeter around a geographic area, typically enforced by monitoring the positions of trackable mobile devices inside or outside the area, and determining if they cross the fence.
    • PetsMobility, in a document quoted in The Geopolitics of American Insecurity: Terror, Power and Foreign Policy (François Debrix, Mark J. Lacy), page 101:
      Establish a remote programmable geofence around a yard or campus, and use handy notification features that alert your cell phone when a breach occurs.
    • 2011, Chuck Martin, The Third Screen: Marketing to Your Customers in a World Gone Mobile, page 144:
      A geofence could be a mile or more around a store or it could be fifty feet from the front door, whatever the business decides.
    • 2012, Dan Burges, Cargo Theft, Loss Prevention, and Supply Chain Security:
      It is recommended that the load be monitored actively or that alerts in the event of a geofence break be sent to an offsite monitoring service in addition to the shipper's point of contact in order to expedite the escalation []


geofence (third-person singular simple present geofences, present participle geofencing, simple past and past participle geofenced)

  1. (transitive) To provide a geofence around (an area).
    • 2017 April 23, Andrew Liptak, “Uber tried to fool Apple and got caught”, in The Verge[1]:
      The practice, called fingerprinting, is prohibited by Apple. To prevent the company from discovering the practice, Uber geofenced Apple headquarters in Cupertino, changing its code so that it would be hidden from Apple Employees.