An information service method including the steps of reading out unique identification information written on a recording medium using a terminal equipment upon installation of the recording medium, transmitting the read-out unique identification information from the terminal equipment via a communication network, and registering the transmitted unique identification information using a server apparatus. The server apparatus then judges whether data related to the owner of the recording medium corresponding to the transmitted unique identification information exists, and data related to dedicated service intended for the owner is transmitted to the terminal equipment when it is judged that data related to the owner exists.