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Google Authenticator is a software-based authenticator by Google. It implements multi-factor authentication services using the time-based one-time password (TOTP; specified in RFC 6238) and HMAC-based one-time password (HOTP; specified in RFC 4226), for authenticating users of software applications.
How do I get an authenticator app? Download an authenticator app from the Google Play Store or App Store. Popular authenticator apps include Google Authenticator, Microsoft Authenticator, LastPass Authenticator, and Authy. Enable 2-step for authenticator app. Important - You may not see this option as it yet available for all accounts. 1.
Click the + button at the top-left of Authenticator. Add the secret 2FA key to Authenticator using either one of these methods: Use Authenticator to take a screenshot of the QR code: Click the QR code button at the top-right of Authenticator. Position your pointer before the top-left corner of the QR code from "Step 2" of the 2FA setup page.
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.
Both the authenticator and the authenticatee compute the TOTP value, then the authenticator checks whether the TOTP value supplied by the authenticatee matches the locally generated TOTP value. Some authenticators allow values that should have been generated before or after the current time in order to account for slight clock skews , network ...
NFC authentication works when closer than 1 foot (0.3 meters). [citation needed] The NFC protocol bridges short distances to the reader while the Bluetooth connection serves for data provision with the token to enable authentication. Also when the Bluetooth link is not connected, the token may serve the locally stored authentication information ...