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2. Printer tracking dots - Wikipedia

   en.wikipedia.org/wiki/Printer_tracking_dots

   Yellow dots on white paper, produced by color laser printer (enlarged, dot diameter about 0.1 mm) Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), is a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the specific device that was ...

3. Use Face, Fingerprint or PIN to sign in to AOL

   help.aol.com/articles/use-face-fingerprint-or...

   Use Face, Fingerprint or PIN to sign in to AOL Entering a password to sign in to your AOL account can sometimes feel like a hassle, especially if you forget it. If your smart device is enabled with biometric authenticators like a fingerprint sensor or facial recognition technology, you can sign in with ease.

4. What’s a Personal Identification Number (PIN) - AOL

   www.aol.com/finance/personal-identification...

   A PIN essentially unlocks access to a person’s finances, whether that’s a bank or credit card account. That’s why it’s important to protect these four-digit codes . Safeguarding them can ...

5. 2-Step Verification with a Security Key - AOL Help

   help.aol.com/articles/2-step-verification-with-a...

   Sign in and go to the AOL Account security page.; Under "2-Step Verification," click Turn on.; Click Security Key.; Follow the onscreen steps to add your Security Key. Add additional recovery methods in case your Security Key is lost.

6. Why am I asked to verify my account after signing in?

   help.aol.com/articles/why-am-i-asked-to-verify...

   If there's something unusual about your sign in or recent activity, we'll ask you to go through another verification step after you've entered the correct password. This is an important security feature that helps to protect your account from unauthorized access.

7. Personal identification number - Wikipedia

   en.wikipedia.org/wiki/Personal_identification_number

   A personal identification number (PIN; sometimes redundantly a PIN code or PIN number) is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between different data-processing centers in computer networks for financial ...