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(December 2020) (Learn how and when to remove this message) The landscape for instant messaging involves cross-platform instant messaging clients that can handle one or multiple protocols. [ 1 ] Clients that use the same protocol can typically federate and talk to one another.
Telegram offers end-to-end encryption in voice and video calls, [10] and in optional private chats, which Telegram calls Secret Chats. Telegram also has social networking features, allowing users to post stories , create large public groups with up to 200,000 members, or share one-way updates to unlimited audiences in so-called channels.
WhatsApp (officially WhatsApp Messenger) is an American instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [13] It allows users to send text, voice messages and video messages, [14] make voice and video calls, and share images, documents, user locations, and other content.
The WhatsApp support staff announce that messages were encrypted in the "latest version" of the WhatsApp software for iOS and Android (but not BlackBerry, Windows Phone, and Symbian), without specifying the cryptographic method. [8] 2013: February: Userbase: WhatsApp's user base swells to about 200 million active users and its staff to 50. [2 ...
The last version of the service, launched in 2020 as "ICQ New", featured a number of different messaging functions: Private chats: conversations between two users, with history synchronized to the cloud. A user could delete a sent message at any time, and a notification will be shown indicating that the message has been deleted.
The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...
In May 2012 security researchers noticed that new updates of WhatsApp sent messages with encryption, [40] [41] [42] but described the cryptographic method used as "broken." [43] [44] In August of the same year, the WhatsApp support staff stated that messages sent in the "latest version" of the WhatsApp software for iOS and Android (but not BlackBerry, Windows Phone, and Symbian) were encrypted ...
Much of the scientific work on optography was performed by the German physiologist Wilhelm Kühne.Inspired by Franz Christian Boll's discovery of rhodopsin (or "visual purple")—a photosensitive pigment present in the rods of the retina—Kühne discovered that, under ideal circumstances, the rhodopsin could be "fixed" like a photographic negative.