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  2. 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 using ...

  3. Comparison of cross-platform instant messaging clients

    en.wikipedia.org/wiki/Comparison_of_cross...

    Similar to SMS requirements, RCS messaging requires a valid SIM card to be inserted in the device. RCS chat features may continue to work for up to 14 days, when a SIM card is removed from the device. [107] Yes, only for RCS chats — [clarification needed] Yes ICQ: Phone number Phone required for initial registration.

  4. Device tracking software - Wikipedia

    en.wikipedia.org/wiki/Device_tracking_software

    Device tracking software is software installed in an electronic device that is capable of reporting the device's location remotely. Depending upon the software and the device on which it is installed, the software may obtain the location of the device by means of GPS, WiFi-location, IP address, or accelerometer logs, and it may report the address by means of e-mail, SMS, or other means.

  5. IMSI-catcher - Wikipedia

    en.wikipedia.org/wiki/IMSI-catcher

    With the help of a SIM, it simultaneously logs into the GSM network as a mobile station. Since the encryption mode is chosen by the base station, the IMSI-catcher can induce the mobile station to use no encryption at all. Hence it can encrypt the plain text traffic from the mobile station and pass it to the base station.

  6. Instant messaging - Wikipedia

    en.wikipedia.org/wiki/Instant_messaging

    A classic example of instant messaging on a desktop computer: the left window of this software showing a list of contacts ("buddy list") and the right window an active IM conversation An example of instant messaging on mobile, featuring the exchange of pictures and audio on top of text

  7. Reception and criticism of WhatsApp security and privacy ...

    en.wikipedia.org/wiki/Reception_and_criticism_of...

    The new policy will not allow WhatsApp to see or send messages, which are still end-to-end encrypted, but it will allow Facebook to see data such as what phone and operating system a user has, the user's time zone, IP address, profile picture, status, phone number, app usage, and all of the contacts which are stored in WhatsApp.

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