A. Account and Group Function We implemented the account function and the group function to the user in this system. We created an account with required condition to the Information Provider who uses web application from the aspect of the security. On the other hand, we created an account with the optional condition to the Information Receiver who uses smartphone application. In this case, Information Receiver who doesn't have an account can view only contents openly available on this system. Meanwhile, the user who uses both of web application and smartphone application can experience the respective application using the same account. Moreover, the account user invites the other account user, and it is possible to create "GROUP". The account user can share information between the limited user by create GROUP. And, it is possible to view only the contents of interest