Google Authenticator is a security app adding two-factor authentication to online accounts, requiring a unique code in addition to passwords for enhanced protection.

Download Google Authenticator from the official app store (Google Play or Apple App Store) and follow standard installation procedures for your device.

Upon first opening, add accounts by scanning QR codes or manually entering keys provided by service providers for two-factor authentication setup.

Key features include two-factor authentication, offline code generation, multi-account support, flexible code generation options, and easy account transfers via QR codes.

Customization is limited but includes options like choosing between time-based or counter-based code generation according to specific security needs.

Save favorite content by syncing Authenticator codes to your Google Account, ensuring access across devices even if you lose your phone.

Share content indirectly by transferring accounts between devices using QR codes, though direct sharing isn't supported due to security reasons.

Access detailed information by exploring settings within the app or visiting the official website for comprehensive guides and FAQs about Google Authenticator usage.

The app requires camera permissions for scanning QR codes during account setup; manage these permissions through device settings as needed.

Check for updates regularly through the app store where you downloaded Google Authenticator to ensure optimal performance and latest security enhancements.