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

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

    WhatsApp's new Account Protect feature will ask you to use your old device to verify when you ... verifying your connection with someone involves either scanning a QR code or comparing a 60-digit ...

  3. 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.

  4. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_code

    Whereas a barcode is a machine-readable optical image that contains information specific to the labelled item, the QR code contains the data for a locator, an identifier, and for web-tracking. To efficiently store data, QR codes use four standardized modes of encoding: (i) numeric, (ii) alphanumeric, (iii) byte or binary, and (iv) kanji . [4]

  5. Use WebMD’s Pill Identifier to find and identify any over-the-counter or prescription drug, pill, or medication by color, shape, or imprint and easily compare pictures of multiple drugs.

  6. The main types are: Drug-drug interaction. This is when a medication reacts with one or more other drugs. For example, taking a cough medicine ( antitussive) and a drug to help you sleep (sedative ...

  7. Cholesterol Levels: By age, LDL, HDL, and More - Healthline

    www.healthline.com/health/high-cholesterol/...

    160 or higher; 190 is considered very high. 200 or higher; 500 is considered very high. Low. n/a. less than 40 for men and less than 50 for women. n/a. n/a. Guidelines are similar for males and ...

  8. PET Scan (Positron Emission Tomography) - WebMD

    www.webmd.com/a-to-z-guides/pet-scan

    What Is a PET Scan? A PET scan (also known as positron emission tomography and PET/CT) is a type of imaging study that can show doctors what’s happening in your body and how it’s working. It ...

  9. Lung Opacity: Understanding What This Means - Healthline

    www.healthline.com/health/lung-opacity

    Ground-glass opacity is a radiological term that refers to hazy gray areas on the images made by CT scans or X-rays. It indicates increased density in these areas. Typically, the lungs appear ...