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2. WhatsApp - Wikipedia

   en.wikipedia.org/wiki/WhatsApp

   WhatsApp Web's user interface is based on the default Android one and can be accessed through web.whatsapp.com. Access is granted after the users scan their personal QR code through their mobile WhatsApp application. There are similar solutions for macOS, such as the open-source ChitChat, previously known as WhatsMac.

3. WhatsApp makes it harder for scammers to steal your account - AOL

   www.aol.com/news/whatsapp-makes-it-harder-for...

   Right now, verifying your connection with someone involves either scanning a QR code or comparing a 60-digit number, both of which you can find by tapping the Encryption tab under a contact’s ...

4. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_code

   The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. 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; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...

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

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

   WhatsApp also uses artificial intelligence systems to scan unencrypted data collected from users (profile image and status; phone number, IMEI and OS; names and images of the user's WhatsApp groups; a list of the user's electronic devices [clarification needed]; any Facebook or Instagram accounts) and compares it against suspicious patterns or ...

6. WhatsApp officially announces QR codes and animated stickers

   www.aol.com/whatsapp-officially-announces-qr...

   WhatsApp made it easier to focus on a single participant during a group call — just press and hold on their video. WhatsApp today announced a slew of new features that are set to roll out ...

7. Multi-factor authentication - Wikipedia

   en.wikipedia.org/wiki/Multi-factor_authentication

   Multi-factor authentication is typically deployed in access control systems through the use, firstly, of a physical possession (such as a fob, keycard, or QR-code displayed on a device) which acts as the identification credential, and secondly, a validation of one's identity such as facial biometrics or retinal scan.