Mobile Jiro is a mobile application that allows you to pay Giro fees, various taxes, and utility bills using your smartphone. You can use the Mobile Jiro application using a terminal in your name. [Usage Procedure] 1. After installing the app, select Sign up (new member) or Log in (existing member) 2. Mobile phone identity verification 3. (New member) Enter member information and set a simple password (6 digits) (Existing member) Set a simple password (6 digits) 4. After completing the set