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About change of PIN of my number card (electronic certificate)

If you have forgotten your PIN or locked it, you will need to reset it at the ward office or My Number Card Special Center.

Last update date April 11, 2024

Notice

You can reset your PIN at a convenience store!

If you can enter the PIN (four digits) of the digital certificate for user certificate, reset the PIN (6 to 16 digits mixed with alphanumeric characters) at compatible convenience stores nationwide. I can do it. For more information, please refer to the section on resetting your PIN at convenience store.

Those who have been locked at a medical institution

If the card reader installed at a medical institution, etc., it is locked when trying to read your My Number card, a reset procedure is required.

Main reasons for change

  • I want to change my current PIN to another one.
  • I forgot my PIN.
  • The PIN has been locked at a convenience store, etc. (the PIN must be reset)
  • I have locked my number card at a medical institution
  • I have locked my PIN during the vaccination certificate procedure

If you want to change your current PIN to another PIN

You can change the PIN from a smartphone or PC using the minor portal or user client software only if the current PIN is known. Please refer to the following page for details on how to install.

Window

The ward office, Family Registry Division Registration Section

  • Weekdays: 8:45 a.m. to 5:00 p.m.
  • 2nd and 4th Saturday: From 9 a.m. to noon

My Number Card Special Center, which has jurisdiction over your ward

You can also apply on weekdays and nights, weekends and holidays.

  • Weekdays (Mon./Tue, Friday): 11:30 a.m. to 7:15 p.m.
  • Saturdays, Sundays and public holidays: 9 a.m. to 4:45 p.m.

※Water, Thursday and the third Saturday and Sunday of the next day are closed.

※About jurisdiction ward of each special center, please see page of my number card special center.

What is required for the procedure

Please come to the counter with "Required items" and come to the counter.
The person who does the procedure What you need

The person himself / herself

  • My Number Card

legal representative

(Under 15 years old or adult ward)

  • Two identification documents from legal representative (one point is limited to a photo issued by a public office)
  • family register, Certificate of Registration, etc.
  • Personal My Number Card

proxy/agent
(* Procedure at a later date)

  • proxy/agent's identity verification documents
  • Personal My Number Card

※If proxy/agent does the procedure instead, the procedure will be based on the document inquiry method (the procedure later). It takes a few days to complete the procedure, so please allow yourself to complete the procedure.

  1. After the procedure by proxy/agent, we will mail an inquiry and a power of attorney to confirm your PIN from the ward office or My Number Card Special Center.
  2. Please fill in the inquiry form and letter of attorney and power of attorney.
  3. Please delegate to any proxy/agent to submit your My Number Card, Inquiry Form and Power of Attorney to the ward office or My Number Card Special Center. (proxy/agent needs to present identification documents with a face photo issued by public office.)
  4. Set a new PIN at the ward office or My Number Card Special Center and return it to proxy/agent.

Documents proving the authority of legal representative

※legal representative (adult guardian) of adult ward, please bring adult guardianship registration certificate.

Reset the PIN at a convenience store

You can reset the password of the digital certificate for signature (6 to 16 digits mixed alphanumeric characters) at the convenience store only if you can enter the PIN (4 digits) of the user certificate digital certificate.
It is necessary to install a smartphone compatible with My Number Card and a dedicated application, but you do not need to visit the ward office, and you can apply on weekdays, nights and weekends, so please use it.
Please see the following flyer and the website of the Local Government Information System Organization for details on convenience stores and procedures that can be performed.

  • Handbill

You can reset your personal identification number card at a convenience store (PDF: 678KB) (PDF)

  • Homepage

Local Government Information System Organization (Public Personal Authentication Service Portal Site) (external site)

registration form

Type of personal identification number

Type of personal identification number
PIN number Number of characters and digits
For Basic Resident Register 4 digits
Assistance for entry of ticket information 4 digits
For digital certificates for user certification 4 digits
For signature digital certificates 6 to 16 digits mixed alphanumeric characters

If you enter the wrong 4-digit PIN three times and the PIN for the signature digital certificate 5 times, the lock will be locked.

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For inquiries to this page

Dial for exclusive use of Yokohama City My Number Card

Phone: 0120-321-590

Phone: 0120-321-590

Fax: 045-350-8484

Civic Affairs Bureau Contact Service Dept.

Phone: 045-671-2176

Phone: 045-671-2176

Fax: 045-664-5295

Email address: sh-madoguchi@city.yokohama.jp

Return to the previous page

Page ID: 564-260-336

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