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  2. GPS tracking unit - Wikipedia

    en.wikipedia.org/wiki/GPS_tracking_unit

    GPS antenna size limits tracker size, often smaller than a half-dollar (diameter 30.61 mm). In 2020 tracking is a $2 billion business plus military-in the gulf war 10% or more targets used trackers. Virtually every cellphone tracks its movements. Tracks can be map displayed in real time, using GPS tracking software and devices with GPS ...

  3. StarChase - Wikipedia

    en.wikipedia.org/wiki/StarChase

    StarChase is a company that produces GPS tracking devices of the same name, for law enforcement purposes. Developed from early 2006, the less-than-lethal vehicle tagging system tags, tracks, and locates a fleeing vehicle. [1]

  4. GNSS applications - Wikipedia

    en.wikipedia.org/wiki/GNSS_applications

    SurveyingSurvey-Grade GNSS receivers can be used to position survey markers, buildings, and road construction. [6] These units use the signal from both the L1 and L2 GPS frequencies. Even though the L2 code data are encrypted , the signal's carrier wave enables correction of some ionospheric errors .

  5. Indoor positioning system - Wikipedia

    en.wikipedia.org/wiki/Indoor_positioning_system

    An indoor location tracking map on a mobile phone. An indoor positioning system (IPS) is a network of devices used to locate people or objects where GPS and other satellite technologies lack precision or fail entirely, such as inside multistory buildings, airports, alleys, parking garages, and underground locations. [1]

  6. Electronic tagging - Wikipedia

    en.wikipedia.org/wiki/Electronic_tagging

    Electronic tagging is a form of surveillance that uses an electronic device affixed to a person. In some jurisdictions, an electronic tag fitted above the ankle is used for people as part of their bail or probation conditions. It is also used in healthcare settings and in immigration contexts.

  7. SPOT Satellite Messenger - Wikipedia

    en.wikipedia.org/wiki/SPOT_Satellite_Messenger

    SPOT is a GPS tracking device that uses the Globalstar satellite network [1] to provide text messaging and GPS tracking (depending on the subscription type purchased). [ 2 ] [ 3 ] It has a coverage area that includes a large portion of the planet, with the exception of extreme northern and southern latitudes and parts of the Pacific Ocean. [ 4 ]

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