Abstract
As entering into the big data era, it is essential for business activities to utilize various big data. A society that utilize big data is the arrival of ID-Society in which identifiers are attached to everything related to persons, things and money, and the identifiers are used to collect, link, analyze, and utilize information. In ID-Society of Japan, there are many problems from the viewpoint of privacy protection. In this study, we clarify the problem of ID-Society and suggest the guidelines for establishing the infrastructure of a secure and convenient ID-Society necessary for solving the problem.