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2. QR code - Wikipedia

   en.wikipedia.org/wiki/QR_Code

   QR codes can be used to log into websites: a QR code is shown on the login page on a computer screen, and when a registered user scans it with a verified smartphone, they will automatically be logged in. Authentication is performed by the smartphone, which contacts the server.

3. Add or disable 2-step verification for extra security - AOL Help

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

   Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and how to turn off 2-step verification if you need to.

4. Create and manage 3rd-party app passwords - AOL Help

   help.aol.com/articles/Create-and-manage-app-password

   If you use a 3rd-party email app to access your AOL Mail account, you may need a special code to give that app permission to access your AOL account. Learn how to create and delete app passwords.

5. Fix problems signing into your AOL account - AOL Help

   help.aol.com/articles/help-signing-in

   Having trouble signing in? Find out how to identify and correct common sign-in issues like problems with your username and password, account locks, looping logins, and other account access errors.

6. Time-based one-time password - Wikipedia

   en.wikipedia.org/wiki/Time-based_One-Time_Password

   Time-based one-time password (TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238. [1]

7. QR code payment - Wikipedia

   en.wikipedia.org/wiki/QR_code_payment

   QR code payment A QR code payment is a mobile payment method where payment is performed by scanning a QR code from a mobile app. [1] This is an alternative to doing electronic funds transfer at point of sale using a payment terminal. [2] This avoids a lot of the infrastructure traditionally associated with electronic payments such as payment cards, payment networks, payment terminal and ...