This app is provided by Kobe City. The URL of Kobe City is as follows.
https://www.city.kobe.lg.jp/

This app is used in "e-KOBE: Kobe City Smart Application System".
By using this system, you can easily apply for administrative procedures such as notification of resident transfer from the browser of your PC or smartphone.
In addition, with this app, you can access your My Number card, read your My Number, etc., and digitally sign your application.

"My Number Card" is a personal card that can be obtained by a person who is legally resident in Japan.
Please refer to the following site.
https://www.cao.go.jp/bangouseido/card/index.html
https://www.kojinbango-card.go.jp/

To use this app, you need a model equipped with My Number Card and NFC reader.
This is to access the IC chip of My Number Card.