Passkey is a feature that allows a secure and convenient alternative to passwords, designed to streamline sign-ins across multiple devices. Passkeys provide enhanced security compared to traditional passwords since they are individually generated by your device for each account, making them less susceptible to phishing attacks and unauthorized access.
Passkey is currently only available to use when logging in on iOS.
We encourage users to enroll in passkey for the following benefits:
- Seamless log in experience: Passkeys make signing in easy and convenient. Once you are set up, you can use your passkey to log in to your account across different devices without having to remember or reset a forgotten password.
- Advanced security: Passkeys provide a stronger level of security for your account. Since they are uniquely generated by your device, they are less vulnerable to security threats such as fraudulent, deceptive, or unauthorized attacks.
Passkeys are constructed using public key cryptography from the WebAuthentication (or "WebAuthn") standard. When you register an account, your device generates a unique key pair – one public and one private – for each account. The public key is shared and stored on X, while the private key remains on your device. Your passkey is never shared with X to ensure maximum security, and further reducing the likelihood of unauthorized account access.
Once you are enrolled in passkey on your device, you can log in to your account by choosing the passkey option instead of entering a traditional password. Your device will securely connect with X using the stored public key to authenticate your identity.