Increased Convenience with the Individual Number Card

Individual Numbers are used in three areas of life in Japan: social security, taxes, and disaster prevention measures. When your first resident certificate is created after you arrive in Japan, you will be assigned a 12-digit Individual Number, and you will receive a notice by postal mail informing you of your individual number.
The Individual Number card contains an IC chip that is necessary for living conveniently in Japan. In addition to being used as your official identification card, you can apply electronically for e-Tax using the electronic certificate in the IC chip. In addition, you can obtain a copy of your residence certificate and other government documents at convenience stores. An application is required to receive an Individual Number card.

For more information on the application process and the Individual Number card

Individual Number Card general website
https://www.kojinbango-card.go.jp/en/ (External Link)