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About My Number Card

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My Number Card can be used not only as a document to certify the My Number, but also as a identity verification document, online application for various administrative procedures, online transactions of various private sectors, and more and more situations where it can be used in daily life. We are working to develop safe usage environments from technical and operational perspectives so that all citizens can use My Number Card as a safe and secure.

Table of Contents

1. My Number Card

This is a plastic card with a photo of your name, address, date of birth, gender, etc., which is issued free of charge upon application by residents. The front side of the card can be used as a identity verification document with a photo of your face. In addition, the back side has your My Number (12-digit number), which can be used to confirm your My Number in the procedures stipulated by laws and regulations or ordinance. Since IC chips can be used to safely and securely prove your identity online, they have become a necessary tool for the digital society. We are working to promote the spread and use of this My Number Card.

2. How to apply for My Number Card

You can check how to apply for My Number Card and other information from the following page.
Apply for My Number Card (My Number Card General Site)

From May 26, 2026, applications for the issuance of My Number Card for persons moving out of the country will be accepted online.
Start of Online Issuance Application for My Number Card for People Moving Abroad (My Number Card General Site)

3. My Number Card Expiration Date

My Number Card has two expiration dates.

  1. Validity of the My Number Card body
  2. Expiration date of electronic certificate mounted on IC chips in My Number Card (JPKI-AP)

How to check the expiration date

  • My Number Card body: printed on the front side of the card
  • Electronic certificate: Can be checked on the front of the card or at the Mynaportal

Update Method

Please check from the expiration date and renewal of My Number Card and electronic certificate.

The Digital Agency official note "Q & A on the expiration date of My Number Card (My Number Card and electronic certificate) (Digital Agency official note) " introduces information on the expiration date of My Number Card in a Q & A format.

4. Security of My Number Card

The details are introduced in the Security of My Number Card.

4.1. Temporary stop in case of loss

Call center 24 hours a day, 365 days a year
If you lose your card and contact the Individual Number Card Call Center by phone, measures will be taken to temporarily suspend your card and prevent it from being used by a third party as a fake.
*From January 2016 (2016), temporary suspension of use of the My Number Card will be accepted 24 hours a day, 365 days a year. For information on the Individual Number Card Call Center, please visit the page (My Number Card General Site) for inquiries by phone in .

4.2. Face of My Number Card ticket

It is difficult to misuse because it comes with a face photo.
Even if you lose it, a third party cannot easily impersonate you.

Difficult to counterfeit due to various measures
Forgery of the face of a ticket is made difficult by engraving letters with a laser and applying complex patterns of colors.

4.3. IC Chip

Only the minimum required information is recorded in the IC chip
Highly private information such as "Customs Officer Information" and "Pension Related Information" are not recorded.

Information recorded in the IC chip can be checked
You can check the information recorded on an IC chip by holding it over the IC card reader / writer using software that displays information on the card.

Theft of recorded information is difficult
We have implemented countermeasures against various methods used to illegally steal information, including the automatic deletion of recorded information by function.

A personal identification number is required for use.
A PIN number is set for each electronic certificate and each application. Even if it is lost, the third party who obtained it cannot impersonate without knowing the PIN number. In addition, the PIN number will be locked if it is entered incorrectly more than a certain number of times.

Acquiring Certification for International Security Standards
Acquired ISO / IEC15408 certification, an international standard for IC card security.

5. Information on the My Number Card

There are "JPKI-AP", "Ticket Side AP", "app for assisting input of card information" and "Juki AP" on the My Number Card.

Overview illustration of My Number card application. JPKI-AP is equipped with electronic certificate for signature and electronic certificate for user identification. Other ticket surface AP, app for assisting input of card information, Juki AP, ordinance use AP, and platform.

The following is an explanation of each information. My Number Card App Overview (PDF / 292 kb) There is also an overview in , so please refer to it as needed.

JPKI-AP

It is equipped with a electronic certificate used for Japanese Public Key Infrastructure.

  • Electronic certificate for signature
    Four pieces of information, your name, address, date of birth, and gender, are written on the card. When you go through various procedures, these four pieces of information can be automatically read and written on the card without having to input them each time. (You can electronically sign on the card when filing an e-Tax return or at a Mynaportal online application for child-raising, etc.)
  • Electronic certificate for user identification
    It can be used as a means to prove your identity. (You can log in to Mynaportal where you can view your information, use the certification service at convenience stores, use it as a health insurance card, etc.)

Ticket surface AP

  • Detection of falsification of face-to-face face information
  • Use of image information as evidence of face-to-face identity verification
  • Information to Record
    1. Surface information: 4 information and image of face photo
    2. Back page information: My Number image

App for assisting input of card information

My Number and 4 information can be checked (face-to-face / non-face-to-face) and used as text data
Note: My Number can only be used for administrative work based on the Number Act.

  • Information to be recorded and used
    1. My Number and "4 information" and electronic signature data thereof
    2. My Number and electronic signature data
    3. 4. Information and Electronic Signature Data

Juki AP

  • Record resident register code
  • Resident register code can be used as textual data for Juki Net administration

6. My Number Card on Smartphone

As a My Number Card holder, you can use your Android device or iPhone by adding My Number Card.
For details, please check My Number Card on Smartphone .

7. Materials

Please see the following leaflet for the safety.

8. Other

Evaluation Systems for the Procurement of Information Systems for the Promotion of My Number Card

In order to improve administrative convenience and operational efficiency by promoting the use of My Number Card, which is the foundation of a highly convenient digital society in safe and secure, in April 2020, TMG introduced a program to evaluate private sector, etc., for their efforts related to the use of My Number Card in the procurement of information systems, which are also the foundation of a digital society.

This program is based on 's "Policies for Promoting the Spread of My Number Card and the Use of My Number" (decided by the Digital Government Cabinet Meeting on June 4, 2019).