The term geofence itself is even older.

If he or she strays outside that "geofence," the parent's phone will be notified by text message.

Geofence feature allows you to set up geographic boundaries around areas that have specific interest for you.

Set up a geofence: Your phone will send a signal once you've gotten near your house, which will trigger the light.

An alarm when a geofence around an area is crossed ("when I leave the conference" or "when I get home")

The White House geofence is only the second one that isn't centered on an airport, according to Perry-the first was Tiananmen Square.

With uLocate, Tom Pratt set up his account on the company's Web site to establish a "geofence" around his home and his children's school.

The GeoFence Zone sets geographic boundaries that generate data describing a user's assets and employees as they move either in or out of the zone's perimeters.

Visual Asset Manager 6.2 uses the GeoFence Zone feature to create a record designed to track asset or employee movement in relation to the virtual perimeter.

But the experiment with Kimani has been a success, and last month another geofence was set up in another part of the country for an elephant known as Mountain Bull.

The latest release of Visual Asset Manager includes an enhanced GeoFence Zone feature that allows users to set a virtual perimeter for real-world geographic areas.

So they placed a mobile phone SIM card in Kimani's collar, then set up a virtual "geofence" using a global positioning system that mirrored the conservatory's boundaries.

With Verizon's Chaperone service, parents can set up a "geofence" around, say, a few city blocks and receive an automatic text message if their child, holding the cellphone, travels outside that area.

On both the desktop and mobile screens, users view a map with the current location of the APT-210 device and are provided with real-time status alerts like speeding or exiting a geofence.

The eMed-Trac device also can be programmed with a geofence - an area in which the person can travel, but if they leave that area, an alert will be sent via text, email or voice.

Car Clubs such as Australia's Charter Drive use telematics to monitor and report on vehicle use within pre-defined geofence areas, in order to demonstrate the reach of their transit media car club fleet.

A GeoFence Zone can be dynamically generated - as in a radius around a point location; or a GeoFence Zone can be a predefined set of boundaries.

One particularly troublesome bull elephant, Kimani, had a mobile phone SIM card fitted into his collar, and the wildlife officers set up a virtual 'geofence', using a global-positioning system, that mirrored the boundaries of the nature park.

Advanced features include wide area mapping down to the street level, the ability to identify individual drivers, polygonal geofence functionality for defining driver territories, robust two-way messaging options, and a full reporting suite providing actionable information for fleet optimization.

Some vehicle tracking systems integrate several security systems, for example by sending an automatic alert to a phone or email if an alarm is triggered or the vehicle is moved without authorization, or when it leaves or enters a geofence.

For example, if a user is shopping for something in Safari, the user can say, "Remind me about 'this' when I get home", and Siri will set a reminder with a geofence and attached link of the current page.

GPS tracking systems used in commercial fleets are often configured to transmit location and telemetry input data at a set update rate or when an event (door open/close, auxiliary equipment on/off, geofence border cross) triggers the unit to transmit data.