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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.
2. Next to "2-Step Verification," click Turn on 2SV. 3. Click Get started. 4. Select Authenticator app for your 2-step verification method.-To see this option, you'll need to have at least 2 recovery methods on your account . 5. Click Continue. 6. Scan the QR code using your authenticator app. 7. Click Continue. 8. Enter the code shown in your ...
Open-source two-factor authenticator. No account required. Available in Windows App Store. No Yes No No No No No No Unknown Unknown Unknown Unknown Unknown 2FAuth [36] An open-source PHP web based self-hosted OTP generator, designed for both mobile and desktop. Yes, web based No No Yes Yes Yes No Yes totp-cli [37]
Logging in with 2FA via the web interface. When you log in, after entering your password, you'll be asked for a verification code. Open your 2FA app and you should see a 6-digit verification code. Type the verification code in as is (with no spaces), and you should be logged back in
If you use AOL two-step verification or an older email app, you may need to use an app specific password to access AOL Mail. Learn how to generate third-party app passwords and remember, app passwords are only valid for the app they are created for and remain valid until you sign out or remove access to the app.
Multi-factor authentication (MFA; two-factor authentication, or 2FA, along with similar terms) is an electronic authentication method in which a user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism.
Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure. For example, you might get a text message or email with a six ...
multiOTP is an open source PHP class, a command line tool, and a web interface that can be used to provide an operating-system-independent, strong authentication system. multiOTP is OATH-certified since version 4.1.0 and is developed under the LGPL license.