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A geo-fence is a virtual perimeter for a real-world geographic area.


A geo-fence could be dynamically generated—as in a radius around a store or point location. Or a geo-fence can be a predefined set of boundaries, like school attendance zones or neighborhood boundaries. Custom-digitized geofences have been in use since 2004 for multiple online mapping applications since their development by Dr. Vinay Rawlani at the University of Missouri-Columbia.

When the location-aware device of a location-based service (LBS) user enters or exits a geo-fence, the device receives a generated notification. This notification might contain information about the location of the device. The geofence notice might be sent to a mobile telephone or an email account.

Geofencing, used with child location services, can notify parents if a child leaves a designated area.[1]

Geofencing is a critical element to telematics hardware and software. It allows users of the system to draw zones around places of work, customer's sites and secure areas. These geo-fences when crossed by an equipped vehicle or person can trigger a warning to the user or operator via SMS or Email.

Other applications include sending an alert if a vehicle is stolen[2] and notifying rangers when wildlife stray into farmland.[3]

Geofencing, in a security strategy model, provides security to wireless local area networks. This is done by using predefined borders, e.g., an office space with borders established by positioning technology attached to a specially programmed server. The office space becomes an authorized location for designated users and wireless mobile devices.[4]

With an increasing popularity of mobile advertising, geofencing has been employed to distribute location specific ads to customers on their mobile devices.

See also[edit]

Further reading[edit]

  • De Lara, Eyal; Anthony LaMarca, Mahadev Satyanarayanan (2008). Location Systems: An Introduction to the Technology Behind Location Awareness. Morgan & Claypool Publishers. p. 88. ISBN 978-1-59829-581-8.
  • Anthony .C. Ijeh, Allan .J. Brimicombe, David .S. Preston, Chris .O. Imafidon (2009) Geofencing in a Security Strategy Model: Global Safety and Sustainability. Jahankhani, H. Hessami, A.G. Hsu, F. (Eds.) p.104-111 © Springer-Verlag Berlin Heidelberg 2009. ISBN 978-3-642-04061-0


  1. ^ De Lara, Eyal; Anthony LaMarca; Mahadev Satyanarayanan (2008). Location Systems: An Introduction to the Technology Behind Location Awareness. Morgan & Claypool Publishers. p. 88. ISBN 978-1-59829-581-8. 
  2. ^ "Motorcycle Tracker Updates Every 15 Seconds". Motorcycle USA. 23 January 2009. Retrieved 2009-01-26. 
  3. ^ "Kenya's elephants send text messages to rangers". CBS News. 11 February 2009. 
  4. ^ Hamid Jahankhani, A G Hessami, Feng Hsu: Global security, safety, and sustainability : 5th international conference, ICGS3 2009, London, UK, September 1-2, 2009 : proceedings. ISBN 978-3-642-04061-0