1. Open the Coincheck app, tap "Wallet" at the bottom, then tap the human icon (account) at the top right.

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2. Tap "Passkey authentication".

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3. Tap "Register".

4. Enter the authentication code sent to your registered email address.

• The code expires in 5 minutes.
• Make sure to enter the latest code.

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5. Follow the on-screen instructions to complete biometric authentication.

• If biometric authentication is not set up, screen unlock authentication will be required.

6. When the registered passkey appears on the passkey authentication screen, the setup is complete.

• A confirmation email will be sent to your registered email address.