Google Authenticator

Google Authenticator is a mobile app that generates time-based one-time passwords (TOTP) for two-factor authentication (2FA). It enhances security by requiring users to provide a second verification code in addition to their password when logging into accounts. The app works offline and is widely used to protect online services like email, social media, and financial platforms.

Also known as: Google 2FA, Google TOTP, GAuth, Google Authenticator App, Google OTP

Why learn Google Authenticator?

Developers should learn to use Google Authenticator to implement or integrate 2FA in applications, improving security against unauthorized access and phishing attacks. It's essential for building secure authentication systems in web and mobile apps, particularly for services handling sensitive user data, such as banking, healthcare, or enterprise software.

Learning Resources

• docs: Google Authenticator Help
• tutorial: Implementing TOTP in Python
• video: Two-Factor Authentication Explained
• docs: OWASP Authentication Cheat Sheet