The method of the content providing system or application providing system, content or application, terminal device, a control method of a terminal device, the authentication device, a control method of the authentication apparatus, program, and information storage medium

A among the one authorized terminal device and one or a plurality of non-regular terminal device, provides a possible content or application to limit the terminal device can use the content or application to one terminal device to provide a system. A new authentication symbol string, in accordance with the generation rule is generated based on at least a portion of the authentication symbol string stored in the first authentication symbol string storage unit 100. New authentication symbol string, authentication symbol string may be generated according to the generation rule based on at least part of the authentication symbol string stored in the second authentication symbol string storage unit 200 in association with the terminal identification information if it belongs to the type, it is permitted use of the content or application in the terminal device 10, and the authentication symbol string stored in the first authentication symbol string storage unit 100, second authentication in association with the terminal identification information and authentication symbol string stored in the use symbol sequence storage unit 200 is updated to the new authentication symbol string. .FIELD 8