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My Number Card — PIN Reset

If you've forgotten your PIN or your card has been locked due to too many failed attempts, you can reset it at your municipal office. If you still remember one of your two PINs, you may also be able to reset the other at a convenience store kiosk terminal.

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Documents needed

✓My Number Card
✓Residence card (for identity verification)
✓Driver's license, passport, or other ID (for identity verification)
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Steps

1

Check whether you remember either your digital signature PIN (alphanumeric, 6–16 characters) or your user authentication PIN (4-digit numeric)

2

[If you remember one PIN] Install the 'JPKI暗証番号リセット' (JPKI PIN Reset) app on your smartphone (free)

3

[Kiosk path] Open the app, hold your My Number Card against your phone to complete identity verification, then reserve a kiosk terminal at a convenience store or post office

4

[Kiosk path] Go to the reserved kiosk terminal, hold your My Number Card against it, and follow the on-screen instructions to reset your PIN (no ID documents needed)

5

[If you've forgotten both PINs] Visit your municipal office (some municipalities require an appointment)

6

[At the municipal office] Present your My Number Card and identity documents

7

[At the municipal office] After identity verification, set new PINs at the terminal

8

Your card is unlocked and ready to use with the new PIN

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Important notes

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There are 4 types of PINs: ① Digital signature certificate PIN (alphanumeric, 6–16 characters), ② User authentication certificate PIN (4-digit numeric), ③ Resident register PIN (4-digit numeric), ④ Card surface input assistance PIN (4-digit numeric). The number of allowed failed attempts differs: 5 for ①, 3 for ②③④

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If you still remember either the digital signature PIN (alphanumeric, 6–16 characters) or the user authentication PIN (4-digit numeric), you can reset the other via the 'JPKI PIN Reset' app (reserve a kiosk session) then complete the reset at a convenience store or post office kiosk terminal. If you've forgotten both, you must go to the municipal office

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Same-day processing is available (may take up to several tens of minutes depending on the municipality and how busy it is)

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The procedure is free of charge

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