Google Authenticator

Google Authenticator is an Android system tool that adds a second verification step to online account sign-ins. It generates a verification code on the phone, which is entered alongside the account password. Codes can be generated without a network or cellular connection. The app is intended for people who use accounts protected by this additional verification step.

Authenticator accounts can be added automatically by scanning a QR code, with camera access needed for this setup. The app supports multiple accounts, allowing codes for different accounts to be managed in one place. It supports both time-based and counter-based code generation. Accounts can also be transferred between devices with a QR code, and codes can be synced to a Google Account and across devices.

MirrorNest lists Google Authenticator for Android in the System Tools category. The listing identifies its license as demo trial. MirrorNest links directly to the official release instead of mirroring the application. To use Google Authenticator with a Google Account, 2-Step Verification must first be enabled for that account.

Free to use — a paid version with additional features is also available.