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  2. Videotelephony - Wikipedia

    en.wikipedia.org/wiki/Videotelephony

    Videotelephony (also known as videoconferencing or video calling) is the use of audio and video for simultaneous two-way communication. [1] Today, videotelephony is widespread. There are many terms to refer to videotelephony. Videophones are standalone devices for video calling (compare Telephone).

  3. Mobile phone tracking - Wikipedia

    en.wikipedia.org/wiki/Mobile_phone_tracking

    An indoor location tracking map on a mobile phone. Mobile phone tracking is a process for identifying the location of a mobile phone, whether stationary or moving. . Localization may be affected by a number of technologies, such as the multilateration of radio signals between (several) cell towers of the network and the phone or by simply

  4. What3words - Wikipedia

    en.wikipedia.org/wiki/What3words

    What3words (stylized as what3words) is a proprietary geocode system designed to identify any location on the surface of Earth with a resolution of approximately 3 metres (9.8 ft). It is owned by What3words Limited, based in London , England.

  5. Find me/follow me - Wikipedia

    en.wikipedia.org/wiki/Find_me/follow_me

    Find Me” refers to the ability to receive incoming calls at any location. “Follow Me” refers to the ability to receive calls at any number of designated phones, whether ringing all at once, or in sequence. In some systems, the user is assigned a virtual phone number. When that number is dialed, the system routes the call through a user ...

  6. Real-time locating system - Wikipedia

    en.wikipedia.org/wiki/Real-time_locating_system

    Current location-tracking technologies can be used to pinpoint users of mobile devices in several ways. First, service providers have access to network-based and handset-based technologies that can locate a phone for emergency purposes. Second, historical location can frequently be discerned from service provider records.

  7. Direction finding - Wikipedia

    en.wikipedia.org/wiki/Direction_finding

    By triangulation, the location of a radio source can be determined by measuring its direction from two or more locations. Radio direction finding is used in radio navigation for ships and aircraft, to locate emergency transmitters for search and rescue, for tracking wildlife, and to locate illegal or interfering transmitters. During the Second ...