. . . . . . . "Google Authenticator is an application that implements TOTP security tokens from RFC 6238 in mobile apps made by Google, sometimes branded \"two-step verification\". Authenticator provides a six- to eight-digit one-time password which users must provide in addition to their username and password to log into Google services or other sites. The Authenticator can also generate codes for third-party applications, such as password managers or file hosting services."@en .