A system for user and device registration

A consumer electronic device (eg TV, video, set top box) device obtains information for user authentication from a user or an IC-card. User and device authentication information is sent to a device registration server. The device registration server sends the user information a user authentication server, and the device information to a device authentication server. The user authentication server executes user authentication, and sends user information of the user to the device registration server if the authentication succeeds. The device authentication server executes device authentication, and sends device information of the device to the device registration server if the authentication succeeds. The device registration server associates the user information and the device information with each other.