About
This app facilitates secure electronic signatures and identity verification using a My Number Card. It integrates with a cloud-based service to authenticate users and sign documents digitally, primarily for business transactions like real estate contracts.
What's New in マイナトラスト 電子署名
1.0.16
January 28, 2026
年齢制限の表記設定を更新しました。（対象年齢や機能に変更はなく、これまで通りご利用いただけます）
Developer apps
FAQ
What is マイナトラスト 電子署名?
マイナトラスト 電子署名 is an application that works with a cloud-based electronic signature service. It uses your My Number Card for identity verification and to digitally sign documents.
How does マイナトラスト 電子署名 verify identity?
It uses your My Number Card's chip data, read via NFC on your smartphone, and requires input of specific passwords and card details to match pre-registered information.
What is needed to use マイナトラスト 電子署名?
You need a smartphone with NFC support compatible with My Number Cards, your My Number Card, and the passwords you set when obtaining the card (signature electronic certificate PIN and face-input auxiliary PIN).
Does マイナトラスト 電子署名 use the My Number itself?
No, the app handles the card's facial information and the digital signature certificate stored on the IC chip. It does not use the My Number itself.
What types of documents can be signed with マイナトラスト 電子署名?
Currently, it supports important matters explanations, sales contracts, and services leading to registration in real estate transactions. The service plans to expand its supported document types.
Is マイナトラスト 電子署名 free to use?
Yes, the app is free to use. However, users are responsible for any communication charges incurred for downloading and using the app.
What devices are supported by マイナトラスト 電子署名?
The app is supported on iPhones and iPods. It requires a smartphone with NFC support compatible with My Number Cards.
How often is マイナトラスト 電子署名 updated?
The app was last updated on January 28, 2026, with version 1.0.16. This indicates a recent update, suggesting ongoing development and maintenance.