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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. 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]

  4. Real-time geotagging - Wikipedia

    en.wikipedia.org/wiki/Real-time_geotagging

    One alternative to GPS is WiFi triangulation which uses the MAC addresses of nearby wireless access points to determine position. Automatic geotagging relies on media acquisition devices that contain GPS, aGPS, or WiFi or other local positioning systems. Many camera phones use all these methods: GPS, aGPS, cell tower signals, and WiFi ...

  5. 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]

  6. Electronic monitoring in the United States - Wikipedia

    en.wikipedia.org/wiki/Electronic_monitoring_in...

    GPS-based tracking system used for some individuals released from prison, jail or immigrant detention. According to a survey distributed by The Pew Charitable Trusts in December 2015, "the number of accused and convicted criminal offenders in the United States who are supervised with ankle monitors and other GPS-system electronic tracking devices rose nearly 140 percent over 10 years ...

  7. I tried Walmart's $15 AirTag alternative, the Onn Item ... - AOL

    www.aol.com/lifestyle/onn-item-tracker-review...

    Bottom line: I can't recommend the Onn Item Tracker. Even when my first unit was working, it wasn't as loud as an AirTag, meaning I'd have a harder time hearing it beep while trying to locate it.

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