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My Number Card security

The Government of Japan is working to develop safe environments for the use of My Number Card from a technical and operational perspective so that the people of Japan can use safe and secure. There are also systems that allow My Number Card to be temporarily suspended in the event of loss or theft, and allow issue to be resumed in one week as a rule.

Procedures for Lost or Stolen My Number Card

1. Temporary Suspension of Use of Functions

If your smartphone equipped with My Number Card and electronic certification is lost or stolen, you can immediately follow the procedure for temporary suspension of use of the My Number Card function by phone. Please contact the following My Number general toll-free number to inform us of the temporary suspension.

  • My Number toll-free number: 0120-95-0178
    Please select number 2 in the voice guidance.

The temporary suspension procedure is available 24 hours a day, 365 days a year, and some foreign languages are also available.
Please check the details from the My Number Card General Site .

2. issue of My Number Card again

In the event of loss or theft, you can use the My Number Card Issuance and issue Scheme, which allows you to re-issue a issue within one week as a general rule.

  1. Application for issue
    You must apply for a My Number Card at the counter of the municipality where you live within 30 days of losing your issue. If you are unable to apply for a issue within this period due to circumstances, please consult with the municipality where you live.
    • Required documents
      • Identity verification document
      • My Number Card issue Application Form (Window issue)
      • PIN Setting Request Form (Window issue)
    • Commission
      • Payment of issuance fee of 2,000 yen (1,800 yen if electronic certification is not required) at the counter
  2. Receipt of a reissued My Number Card
    As a general rule, a issue will be delivered to the address of your resident registration within a week after you apply for a My Number Card in My Number Card. As it is a simple registered mail, you need to receive it face to face.

For details on the "Issuance of Limited Expresses and issue Systems", please check the application procedures for the Issuance of Limited Expresses and issue Systems (My Number General Website) .

Safety System

Various technologies are applied to the face of the My Number Card and IC chips to ensure safe use.

Even if you drop the My Number Card, there is a mechanism to prevent misuse

  • The use of ink that appears to change to two colors depending on the angle from which it is viewed, special processing for face photo display, and laser lettering make it difficult to forge the face of a ticket.
  • The face of the ticket is with a photo, so even if you lose it, a third party cannot easily impersonate you.
  • In order to read the information stored in the IC chip, a 4-digit PIN code and facial recognition are required. The PIN code is locked if it is mistaken a certain number of times and cannot be unlocked unless the person himself goes through the necessary procedures.

Personal information such as taxes and pensions will not be stolen just by seeing your My Number.

  • Even if the 12-digit My Number (Individual Number) printed on the back of the My Number Card is seen, the information cannot be retrieved or misused immediately because the procedure cannot be done with the My Number alone.

If you try to read information illegally, the IC chip will be broken.

  • If an unauthorized person tries to read information from an IC chip, the IC chip is automatically broken and the information cannot be read.

Only the minimum necessary information is recorded on the IC chip.

  • The IC chips installed in the My Number Card do not store medical information such as medical histories, bank account numbers, taxes, pensions, or other privacy-sensitive information.

How Distributed Information Management Works

  • My Number System is not a "centralized management" system that allows the government to gather, manage, and view all information in one specific location. It adopts a "decentralized management" system in which information necessary for administrative procedures, etc. is exchanged only when necessary. It is not a system that collects all information in a specific organization and creates a common database, so information does not leak out in a cobbled-together manner.
  • Information is exchanged using different codes (encrypted codes) for each government office, which can be matched only within the system. Even in government officials, only the officials who accept the procedures are allowed to access the information necessary for the procedures.

Certification of international security standards

  • We have acquired ISO / IEC15408 certification, the international standard for security function evaluation.

Frequently Asked Questions

References