a system and method is presented for verifying the ability to use stored authentication information when accessing a remote media service . a media device , such as a television , is described that stores authentication information for a remote media service . such authentication information may include a user name and a password . because media devices may be re - sold , returned for re - sale , or refurbished , it is necessary to automatically disable the authentication information to prevent a second owner from accessing the services and accounts belonging to a first owner . the ability to use authentication information is disabled upon a long delay in accessing the service , a complete power down cycle , a change in ip address , or a change in network interfaces used to access the network .