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  2. Geofence - Wikipedia

    en.wikipedia.org/wiki/Geofence

    The use of a geofence is called geofencing, and one example of use involves a location-aware device of a location-based service (LBS) user entering or exiting a geofence. Geofencing approach is based on the observation that users move from one place to another and then stay at that place for a while.

  3. Geopositioning - Wikipedia

    en.wikipedia.org/wiki/Geopositioning

    Geofencing involves creating a virtual geographic boundary (a geofence), enabling software to trigger a response when a device enters or leaves a particular area. [3] Geopositioning is a pre-requisite for geofencing.

  4. Location-based firearm - Wikipedia

    en.wikipedia.org/wiki/Location-based_firearm

    A location-based firearm is a gun that uses electronic technologies such as geofencing to restrict its firing to authorized locations, thereby allowing its use for protecting life and property in those locations while preventing its use in other locations for crimes such as robberies, drive-by shootings, assassinations, and massacres.

  5. Geofence warrant - Wikipedia

    en.wikipedia.org/wiki/Geofence_warrant

    A 2021 transparency report showed that 25% of data requests from law enforcement to Google were geo-fence data requests. [5] Google is the most common recipient of geo-fence warrants and the main provider of such data, [4] [6] although companies including Apple, Snapchat, Lyft, and Uber have also received such warrants. [4] [5]

  6. Reverse search warrant - Wikipedia

    en.wikipedia.org/wiki/Reverse_search_warrant

    A 2021 transparency report showed that 25% of data requests from law enforcement to Google were geo-fence data requests. [3] Google is the most common recipient of reverse location warrants and the main provider of such data, [4] [5] although companies including Apple, Snapchat, Lyft, and Uber have also received such warrants. [1] [3]

  7. Earth-centered, Earth-fixed coordinate system - Wikipedia

    en.wikipedia.org/wiki/Earth-centered,_Earth...

    The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.

  8. Indoor positioning system - Wikipedia

    en.wikipedia.org/wiki/Indoor_positioning_system

    Because radio waves propagate according to the inverse-square law, distance can be approximated (typically to within 1.5 meters in ideal conditions and 2 to 4 meters in standard conditions [52]) based on the relationship between transmitted and received signal strength (the transmission strength is a constant based on the equipment being used ...

  9. List of free geology software - Wikipedia

    en.wikipedia.org/wiki/List_of_free_geology_software

    LPGL 3.0 Cross-platform: Python: Documentation and tutorials fully available in ReadTheDocs: geoapps repository [24] The geoapps repository are open-source geoscientific applications in Python, including geophysical data processing, modelling, and inversion codes Mira Geoscience Ltd. MIT: Cross-platform: Python