A text-enabled device is any device that has the capability to receive text (SMS) messages for user account management purposes, such as one-time tokens for Multi-Factor Authentication (MFA) and notifications for Request Forgotten Login ID, Forgot Password, Change Password If Account Is Locked, and Enable Your User Account. Registering a text-enabled device number during MFA activation is optional. However, if you do not register a text-enabled device with your RDS user account, one-time tokens and user account management notifications cannot be provided to you via SMS (text) message. For SMS (text) messages, there is no charge from CMS' RDS Center, however standard rates from your carrier may apply. Refer to your device's plan for guidance.
Refer to Multi-Factor Authentication for additional information.