About
This app facilitates secure digital signatures using your My Number Card for online government services. It guides you through the process of verifying your identity and completing digital signatures without storing personal information on your device.
What's New in Graffer電子署名アプリ
2.0.6
December 15, 2025
内部メンテナンスのための更新を行いました
FAQ
What is Graffer Electronic Signature App used for?
Graffer Electronic Signature App is used to perform digital signatures with your My Number Card for online government services. It helps verify your identity and complete necessary applications securely.
What do I need to use Graffer Electronic Signature App?
You will need your My Number Card and its 6-digit or more PIN (the one for digital certificate use). Your smartphone must also be compatible with NFC or Felica.
Is my personal information safe with Graffer Electronic Signature App?
Yes, the app does not store any personal information or My Number data within the application itself. The operating company, Graffer, Inc., holds Privacy Mark and ISO 27001 certifications.
What devices are compatible with Graffer Electronic Signature App?
The app is compatible with smartphones that support NFC or Felica. This includes iPhones and iPods.
How often is Graffer Electronic Signature App updated?
The latest version is 2.0.6, and it was last updated on December 15, 2025. Updates ensure continued functionality and security for users.
What should I do if my My Number Card is not being read by the app?
Try removing your iPhone case, placing the card face up on a desk, aligning the top of the card with the top of your iPhone, and ensuring they are perfectly stacked. A gap or movement can prevent reading. A successful read takes 5-10 seconds.
Does Graffer Electronic Signature App have ads?
No, Graffer Electronic Signature App does not contain advertisements.
What is the user sentiment for Graffer Electronic Signature App?
The app has an average rating of 2.1 stars from 173 ratings, indicating that user satisfaction is currently low. Many users may be experiencing difficulties with its functionality or usability.
