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

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

   WhatsApp launches WhatsApp Web, a web client which can be used through a web browser by syncing with the mobile device's connection. Jan 21, 2015: WhatsApp announces its policy on cracking down on 3rd-party clients, including WhatsApp+. Users would not be able to use WhatsApp’s services at all until the third-party apps are uninstalled.

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. What Is a CT Scan? - WebMD

   www.webmd.com/cancer/what-is-a-ct-scan

   It is rare to have an allergic reaction or medical problems with CT scan contrast. Most reactions are mild and cause itchiness or a rash. In rare situations, the contrast could potentially cause a ...

6. 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]

7. End-to-end encryption - Wikipedia

   en.wikipedia.org/wiki/End-to-end_encryption

   End-to-end encryption (E2EE) is a private communication system in which only communicating users can participate.As such, no one, including the communication system provider, telecom providers, Internet providers or malicious actors, can access the cryptographic keys needed to converse.

8. What to Expect During a Therapeutic Ultrasound - Healthline

   www.healthline.com/health/therapeutic-ultrasound

   What to expect. Your PT will apply conductive gel to the body part in focus. They will slowly move the transducer head back and forth on the skin of the body part in focus. Depending on your ...

9. CT Scans vs. MRIs: Differences, Benefits, and Risks - Healthline

   www.healthline.com/health/ct-scan-vs-mri

   CT scans provide pictures of tissues, organs, and skeletal structure while MRIs are more detailed and can show abnormal tissue. The biggest difference is that MRIs (magnetic resonance imaging) use ...