An electronic authentication method for identifying a user who is going to use a recording medium into which the information for making use of any kind of computerized service has been stored, comprising a step to carry out authentication by comparing the authentication information input by the user who is going to use the recording medium into which the information for making use of any kind of computerized service has been stored with the authentication information recorded on the recording medium and a step to carry out authentication by comparing the authentication information input by the user or the authentication information recorded on the recording medium with the registered authentication information existing in the hub of the networking to provide the service.