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2. WhatsApp - Wikipedia

   en.wikipedia.org/wiki/WhatsApp

   However, linked devices (using WhatsApp Web, WhatsApp Desktop or Facebook Portal) will become disconnected if people don't use their phone for over 14 days. [199] The multi-device beta can only show messages for the last 3 months on the web version, which was not the case without the beta because the web version was syncing with the phone. [200]

3. Comparison of cross-platform instant messaging clients

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

   The secondary device is a computer running a desktop operating system, which serves as a companion for the primary device. Desktop messaging clients on secondary devices do not function independently, as they are reliant on the mobile phone maintaining an active network connection for login authentication and syncing messages.

4. Timeline of WhatsApp - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_WhatsApp

   Timeline of WhatsApp. The following is a timeline of WhatsApp, a proprietary cross-platform, encrypted, instant messaging client for smartphones. [1] Jan Koum incorporates WhatsApp in USA. [2] WhatsApp 2.0 is released on the App Store for the iPhone. [3]

5. Instant messaging - Wikipedia

   en.wikipedia.org/wiki/Instant_messaging

   Instant messaging (IM), sometimes also called "messaging" or "texting", consists of computer-based human communication between two users (private messaging) or more (chat room or "group") in real-time, allowing immediate receipt of acknowledgment or reply. This is in direct contrast to email, where conversations are not in real-time, and the ...

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

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

   WhatsApp introduces Read Receipts, which show when a message is read by a recipient. Within a week, WhatsApp introduces an update allowing users to disable this feature. [17] Jan 21, 2015: WhatsApp launches WhatsApp Web, a web client which can be used through a web browser by syncing with the mobile device's connection. [18] Jan 21, 2015

7. Signal Protocol - Wikipedia

   en.wikipedia.org/wiki/Signal_Protocol

   signal.org /docs. The Signal Protocol (formerly known as the TextSecure Protocol) is a non- federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations. [2] The protocol was developed by Open Whisper Systems in 2013 [2] and was introduced in the open-source TextSecure app, which later ...