Google Authenticator Зависит от устройства

The Google Authenticator application creates two-step authentication codes in the phone. Two-step authentication provides an additional level of account protection against hacking. When using this function, you need to enter not only the password, but also the code generated by the application to log in to your account. Enable additional account protection on the page accounts.google.com/SmsAuthConfig .

Functions:
* create codes even in flight mode;
* work with multiple accounts;
* Multi-language support.

On our own, we add: we recommend installing this application to all those who use Google mail. The latest version of the app Google Authenticator download for android.