A passkey is a new login authentication method that replaces passwords. It allows you to log in safely and easily without entering a password by using biometric authentication on your device (such as fingerprint or facial recognition) or screen lock features (such as PIN code, passcode, or pattern).
■ How Passkeys Work
Passkeys use an authentication method based on "public-key cryptography."
At the time of registration, a "public key" and "private key" are generated on your device, and only the public key is stored by our company.
When logging in, authentication is performed using the private key stored on the device and the public key stored on our side.
At this time, using the private key requires biometric authentication on the device (such as facial or fingerprint recognition) or screen lock authentication (PIN, passcode, pattern, etc.), so password entry is not necessary.
*Public-key cryptography is a method that uses different keys for encryption and decryption, where data encrypted with the public key can only be decrypted with the corresponding private key.
■ Features of Passkeys
Login without entering a password
Easy authentication using fingerprint, face recognition, or PIN code
Strong against phishing attacks (low risk of leakage)
■ Where Passkeys Are Stored
Passkeys are managed in one of the following storage locations.
*You can select the storage location when registering a passkey.
- On the device itself
- Cloud account (such as Apple or Google account)
- Password management app (such as a password manager)
Depending on the functionality of the storage location, passkeys may be usable on multiple devices via cloud synchronization.
■ How to Use Passkeys
Passkeys are supported on the following versions.
- iOS: 16 or later
- Android: 10 or later （Please update Android System WebView to the latest version.）
- Windows: 10 or later
- macOS: 10.15 or later
One of the following storage locations must be enabled in your device settings.
- Device authentication features (biometric or screen lock authentication)
- Cloud account (such as Apple or Google account)
- Password management app (such as a password manager)
■ Frequently Asked Questions
Q: What is the difference between a passkey and biometric authentication ?
A: A passkey is a system that uses a generated "key" to log in, while biometric authentication (face or fingerprint recognition) is a method to verify that the person using the key is the authorized user. When logging in with a passkey, identity verification is performed using face or fingerprint recognition before the login is executed. Therefore, while passkeys and biometric authentication may seem the same, they are different mechanisms, and biometric authentication alone cannot be used to log in; it is used in combination with passkeys.
Q: Does bitbank receive my facial or fingerprint information ?
A: No, it does not.
When logging in with a passkey, identity verification is done using biometric information stored on your device, but facial or fingerprint data is neither sent to nor stored by our company.
Q: I can no longer log in using my passkey.
A: If there have been changes to your device settings, the passkey storage location, or the stored passkey information, the registered passkey may not be correctly referenced, preventing login. If you cannot log in, please refer to the FAQ below.