Wallet Support Guide for Device Change or Loss

SyFu Wallet uses the MPC (Multi-Party Computation) method, so there is no need to manage your private key directly, as long as any two of the three authentication factors are valid, you can recover y

① If You Lose or Delete Your Passkey

• You can transfer your wallet by registering a new passkey on the new device from the old device.

• If the old device is unavailable, please register a new passkey.

• If your password manager works across devices, you can continue using it as is.

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② When Changing Devices

✅ Things to Check

Email Address Ensure your registered email address remains accessible after the device change so you can log in to your SyFu account. If your registered address becomes unavailable due to the device change, please update it beforehand.

Phone Number No change required. Your registered phone number can be used as-is.

Google Authenticator Export and transfer it to the new device before changing devices.

Passkey Either register the new device’s passkey from your old device, or re-register a new passkey on the new device.

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🔑 Authentication Recovery Requirements

You can recover your wallet if any two of the three (Email, Phone/Google Auth, Passkey) are valid.

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③ If Your Device Is Lost

• Recovery is possible using your private key backup.

• Phone Number → Usable as-is.

• Google Authenticator → Cannot be recovered if the device is lost (must be exported in advance).

• Passkey → Can be re-registered from your account.

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🔒 Summary

• Always keep at least two authentication methods active (Email + Phone or Passkey + Google Auth, etc.)

• The most important step before changing devices is to confirm or update your email address.

• Google Authenticator must be exported and transferred to the new device.

• Passkey should be registered on the old device and then reset on the new device.