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WhatsApp (officially WhatsApp Messenger) is an instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [14] It allows users to send text, voice messages and video messages, [15] make voice and video calls, and share images, documents, user locations, and other content.
Contactless dining systems can convert paper menus into QR code menus and also manage waitlists, as well as provide other services to restaurants. [ citation needed ] By speeding up the payment process, contactless payments allows for shorter meal durations and additional guests to be seated during busy periods.
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 ...
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Comparison of cross-platform instant messaging clients. 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. The following table compares general and technical information for cross ...
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
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 ...
Years active. 1994–present. Jan Borysovych Koum[a] (born February 24, 1976 [1]) is a Ukrainian-American billionaire businessman and computer programmer. He is the co-founder and former CEO of WhatsApp, a mobile messaging app which was acquired by Facebook in 2014 for US$19.3 billion.