TRANSMISSION DEVICE, RECEPTION DEVICE, USE LIMIT SYSTEM, AND CONTENT TRANSMISSION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a use limit system which enables only a user of contents to use the contents by surely deciphering the enciphered contents. SOLUTION: The use limit system is constituted of a transmission device which sets restrictions on use to contents on the basis of physical features of a normal user who uses the contents and transmits the contents and a reception device which acquires the physical features of the legitimate user who uses the contents in order to remove restrictions on use of the contents transmitted from the transmission device.