Google Authenticator generates 2-step verification codes on your phone.
Enable 2-step verification to protect your account from hijacking by adding another layer of security. With 2-step verification signing in will require a code generated by the Google Authenticator app in addition to your account password.
Start by visiting accounts.google.com/SmsAuthConfig
* Generates codes even in airplane mode!
* Support for multiple accounts
* Support for multiple languages
* UI improvements
* When two identical accounts from different websites are added to Authenticator, it no longer overwrites the first account