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Frequently Asked Questions (FAQs): My Number Card Utilization for private sector

Last Updated:

Frequently Asked Questions (FAQs) for private sector.

Contents

  1. My Number Card
  2. Japanese Public Key Infrastructure (JPKI)
  3. Services to provide the latest user information (4 information)
  4. Mynaportal
  5. Other

FAQ

1. My Number Card

Q1-1 What is the number of issue tickets in My Number Card and the ratio of the number of issue tickets to the population?

A1-1

Please check the issue status of My Number Card from (Ministry of Internal Affairs and Communications) .

Q1-2 How can I use the My Number Card?

A1-2

There are three main ways to use it.

  • Use of the card face
  • Use of electronic certification (electronic certification for signature, electronic certification for user certificate)
  • Use of free space of IC chip
Use of the card face

The front side can be used as a identity verification document at the counter or other financial institutions that require a identity verification. The back side can be used when you are asked to present your Individual Number. After the introduction of the My Number System, you will need to present your Individual Number in many situations, such as when you are employed, changing jobs, giving birth or raising children, becoming ill, receiving a pension, or having a disaster. In this case, if you have a My Number Card, you can check your Individual Number and perform a identity verification with only one sheet.

Use of electronic certification (electronic certification for signature, electronic certification for user certificate)

The IC chips of My Number Card are equipped with two electronic certification used for Japanese Public Key Infrastructure, "electronic certification for signature" and "electronic certification for user certificate". For details of electronic certification, what is Q2-1? Please check from .

Use of free space of IC chip

The IC chips in My Number Card have a free space. This space is designated by ordinance for municipalities and prefectures, and by the Minister for Internal Affairs and Communications for national institutions, enabling them to provide their own services.

For details, please refer to the materials listed below.

Q1-3 Is it possible to carry out age verification using My Number Card?

A1-3

It is possible to confirm your age using the function of My Number Card.
There are three main ways in which age verification can be done.

  • Method 1: Using JPKI-AP in My Number Card IC Chips
  • Method 2: A method of using an auxiliary AP for inputting a ticket face in an IC chip of a My Number Card
  • Method 3: Reading the Ticket Information by OCR

Please refer to the table below for details.

Method 1Method 2Method 3
My Number Card usage functionsJPKI-AP (electronic certification for Signature)Auxiliary AP for inputting information on the ticketTicket information (read by OCR)
Available ToPlatform (PF) Operator / Service Provider (SP) OperatorAnyone can do it
PIN requiredRequired (6 to 16 alphanumeric characters)Required (14-digit number *)Unnecessary
OverviewAfter receiving electronic signatures and electronic certification from users, age verification was conducted based on the date of birth of the four pieces of information obtained. Information on the date of birth (or 4 pieces of information) is read by the ticket information input support AP, and age confirmation is performed from the information. With this method, only the date of birth can be obtained. Age verification is carried out by reading the date of birth printed on the My Number Card using the OCR function.

* In the case of "Method 2: Method using the auxiliary AP for inputting the ticket surface in the IC chip of the My Number Card", the verification number B (14 digits: 6 digits of the date of birth + 4 digits of the expiration date portion + 4 digits of the security code) is required at the time of data acquisition.

Q1-4 Can you give us some examples of the use of My Number Card?

A1-4

List of Japanese Public Key Infrastructure operators using My Number Card (JPKI) and examples Please check from .

Q1-5 Is there a validity period for the My Number Card?

A1-5

If you are over 18 years old, it is supposed to be until your 10th birthday from the issuance, and if you are under 18 years old, it is supposed to be until your 5th birthday from the issuance.

Q1-6 Can I continue to use the My Number Card even if I move out of the country?

A1-6

Since May 27, 2024 (2024), Japanese nationals have been able to continue using the My Number Card even after leaving Japan. Japanese nationals residing outside Japan who do not currently hold a My Number Card (limited to those who moved out of Japan on or after October 5, 2015) can also apply for a My Number Card.

Q1-7 Are there any measures or mechanisms to prevent "impersonation" or "use by a third party"?

A1-7

When using the electronic certification of the My Number Card, a PIN number is required, and if you make a mistake a certain number of times, it will be locked. In addition, high security measures have been taken, such as adopting a system in which the chip will break if you try to forcibly remove information from the IC chip, so that personal information will not be leaked due to loss or theft of the card. If you lose your card, you can temporarily stop using the My Number Card function by contacting the My Number toll-free number (0120 95 0178) (Reference: for inquiries about the My Number System), which is available 24 hours a day, 365 days a year.

Q1-8 When will "furigana" be written on the face of the My Number Card?

A1-8

With the promulgation of the "the Act to Partially Amend the My Number Act" in June 2023 (2023), which requires the use of furigana to describe names in family registers, the "furigana of names" will be recorded and described in the My Number Card. In order to realize the use of furigana to describe names in the My Number Card within three years after the promulgation, necessary preparations are being made for the enactment.

Q1-9 What else is stored in My Number Card IC chips other than electronic certification, and how are they used?

A1-9

"Ticket AP", "Ticket information entry support AP", and "Resident AP" are stored in the AP configuration of the IC chip other than electronic certification, and can be used for automatic entry of name, address, etc. online.

For details, please refer to the materials listed below.

Q1-10 Please tell me the information necessary for utilizing My Number Card.

A1-10

Technical information on the introduction of My Number Card information services for private sector Please check it from .

2. Japanese Public Key Infrastructure (JPKI)

Q2-1? Please check from

A2-1

The IC chips of the My Number Card are equipped with two electronic certification for the Japanese Public Key Infrastructure, the "electronic certification for signing" and the "electronic certification for user certification".

  • Electronic certification for signature
    It contains four pieces of information: name, address, date of birth, and sex. When you go through various procedures, you can automatically read and write these four pieces of information without having to enter them every time. (You can electronically sign your e-Tax return or your online application such as Child-rearing in Mynaportal.)
  • Electronic certification for identification
    You can use it as a means to prove your identity. (You can log in to the Mynaportal where you can view your information, use the certification issue service at convenience stores, or use it as a health insurance card.)

Q2-2 Does the electronic certification have a validity period?

A2-2

Regardless of age, it is supposed to be until the fifth birthday from the issuance.

Q2-3 When do I need to renew my electronic certification?

A2-3

Once the validity period expires, the function as a electronic certification is no longer available. Therefore, if you continue to use the electronic certification, you will need to renew it before the validity period expires. In addition, since the signature electronic certification stores the four basic information (name, address, sex, and date of birth), if your name or address changes due to marriage or relocation, etc., you will no longer be able to use the function as a signature mobile phone. Therefore, if you continue to use the mobile phone, you will need to renew it when you submit a notification of marriage or notification of moving in to the local government.

Q2-4 When does a electronic certification expire?

A2-4

Japanese Public Key Infrastructure (JPKI) (5.1.1. Expiry Conditions for electronic certification) Please check from .

Q2-5 What kind of procedure do I need to take when I use Japanese Public Key Infrastructure?

A2-5

Japanese Public Key Infrastructure (JPKI) (3. Method of Introducing Services) Please check from . Utilizing the services provided by platform operators is one of the fastest ways to use them, so we recommend that you consider it. For details on platform operators and introduction cases, please check from the list of platform operators and the list of cases .

Q2-6 What is the basis of the 4 basic information (name, address, sex and date of birth) registered in the electronic certification for signature?

A2-6

It is based on the resident record managed by the local government.

Q2-7 When the electronic certification is updated and the electronic certification is changed, how do you determine the identity of the user before and after the update?

A2-7

Since January 2017, on the premise of user consent, a service has been provided in which, when a local government logs in at an unknown electronic certification, the local government inquires of J-LIS (electronic certification) about the previous Japan Agency for Local Authority Information Systems, and J-LIS responds to the inquiry, so that the local government can identify the identity of the user (a service linking old and new electronic certification).

Q2-8 Where is "death" included in the reasons for electronic certification cancellation of Japanese Public Key Infrastructure?

A2-8

Death is included in "affiliationChanged" as a reason for expiration. Since the overseas continuous use of the My Number Card started on May 27, 2024 (2024) and the expiration of the electronic certification due to overseas transfer has been eliminated, most of the reasons for expiration are death.

Q2-9 Is it possible for private sector to obtain the user's My Number by Japanese Public Key Infrastructure?

A2-9

My Number cannot be used for administrative procedures other than those prescribed by laws and ordinances or ordinance, such as social security system, tax system, and disaster response. In addition, private sector may not request employees or customers to provide My Number, nor may it provide, collect, or store Specific Personal Information, except as necessary for these procedures.

About My Number Card (4. About the information loaded on the My Number Card) Please check the details of the auxiliary AP from .

Q2-10 When private sector uses Japanese Public Key Infrastructure, is it necessary to obtain the approval of the competent minister?

A2-10

You can use it by entrusting the signature confirmation service to a platform operator without obtaining the approval of the competent minister. For details, please check from the Japanese Public Key Infrastructure (JPKI) (3.1. Service Introduction Method) .

Q2-11 What costs do I have to pay in private sector to use Japanese Public Key Infrastructure as a Signature Verifier?

A2-11

The main costs are as follows.

  • Construction and operation costs of private sector side systems associated with use of Japanese Public Key Infrastructure
  • Japanese Public Key Infrastructure Usage Fee (= Expiration Information Provision Fee) *
    • In the case of a electronic certification for signature, provision of information on expiration is 20 yen per case.
    • In the case of electronic certification for proof of use, 2 yen per case of provision of expired information

* The fee will be free for three years from January 2023. For details, the fee for providing electronic certification expiration information of Japanese Public Key Infrastructure will be free for three years for the time being. Please check from .

Q2-12 Is the Japanese Public Key Infrastructure specified as meeting the requirements of the identity verification under the Mobile Telephone Abuse Prevention Act?

A2-12

The electronic certification for signatures prescribed in Article 3, Paragraph 1 of the Public Personal Authentication Act is specified in the electronic certification set forth in Article 1, Paragraph 5 of the Ordinance for Enforcement of the Act on Prevention of Unauthorized Use of Mobile Phones. Article 3 of the same Ordinance specifies the method of identity verification as follows: Paragraph 1 (h) "When entering into a service provision contract after receiving the transmission of information with an electronic signature, the method of receiving the electronic certification for the electronic signature from the natural person."

Q2-13 Can you give us an example of Japanese Public Key Infrastructure in private sector?

A2-13

List of Japanese Public Key Infrastructure operators using My Number Card (JPKI) and examples Please check from . Materials on services provided by platform operators are also listed.

3. Services to provide the latest user information (4 information)

Q3-1 What is the latest User Information (4) Information Provision Service?

A3-1

Japanese Public Key Infrastructure (JPKI) (6.1. Latest User Information (4) Information Provision Service) Please check .

Q3-2 What are the procedures for using the latest User Information (4) Information Provision Service?

A3-2

Japanese Public Key Infrastructure (JPKI) (6.1. Latest User Information (4) Information Provision Service) Please check 's "Procedures for Use of the Service".

Q3-3 What is the basis of the address information provided by the latest User Information (4) Information provision service?

A3-3

It is the address information written on the resident record as well as the information written on My Number Card and electronic certification.

Q3-4 Is there a validity period for consent?

A3-4

The validity period of the consent is "10 years from the day following the date of consent." The signature verifier must also prompt the user to renew the consent before the 10-year validity period expires.

4. Mynaportal

Q4-1 What is Mynaportal?

A4-1

What is Mynaportal? Please check from (Mynaportal) .

Q4-2 I would like to use Mynaportal APIs, what should I do?

A4-2

Find out what "Mynaportal APIs" are from (Mynaportal) .

5. Other

Q5-1 What is a digital Authentication App?

A5-1

Check from Digital Authentication App (Digital Agency Web Services Application) .