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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.
Maintained by RedHat, and based on Google Authenticator. No No No No Yes Yes No No Yes Yes Yes No No oathtool [18] Command-line tool for generating OTP tokens. No No No Yes No No No FreeBSD, [19] NetBSD, [20] OpenBSD [21] Yes Yes Yes Yes Unknown privacyIDEA Authenticator [22] For use with privacyIDEA Authentication Server, with a secure ...
An authenticator is a means used to confirm a user's identity, [1] [2] ... A well-known example of an OATH authenticator is Google Authenticator, [14] ...
• Use a strong password and change it regularly - Create a strong password to minimize the risk of unauthorized account access. • Add another level of security - Turn on two-step verification and get sent a security code when someone logs in from an unfamiliar device or location.
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.
The option to enable biometrics as a sign-in method may not yet be available for you. If you see the option to enable it when you sign in, follow the prompts to complete the process.
An authenticator app enables two-factor authentication in a different way, by showing a randomly generated and constantly refreshing code, rather than sending an SMS or using another method. [5] This code is a Time-based one-time password (a TOTP)), and the authenticator app contains the key material that allows the generation of these codes.
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