Two-Step verification also supportsĪuthenticator apps like Google and Microsoft as an option to instead of receiving verification codes. After logging in, you will enter a Citrix verification code sent to your phone via text message (SMS) or voice call. Application-Specific Password for Unsupported AppsĪbout Two-Step Verification Two-Step Verification uses your phone to provide an extra layer of security for your username and password.Two-Step Verification uses verification codes to your phone to provide an extra layer of security for authentication. Use this article for more information on how to use and manage Two-Step Verification features.