When you set up passkeys for an account, your device generates one public key and one private key. The private key remains on your device, while the shared public key is stored on the platform you want to access (in this case, . After installing all, you can choose the passkey option instead of password to access the X account. Your device will authenticate you using a public key. The same passkey will work on all devices signed into the same iCloud account.
Signing into a supported account is similar to unlocking your phone — you’ll just use a PIN, fingerprint, or face scan for authentication. You won’t need to remember any passkeys, and they’re largely secure. First, switch keys make phishing attacks more difficult to defeat.
We’re excited to launch Passkeys as a sign-in option for our US users on iOS today!
Passkey is a new, easy-to-use and secure way to access your account – all from your device. Passkeys are more secure than traditional passwords because they are individually…
— Safety (@Safety) January 23, 2024
Sign in to the iOS app with the account you want to use to set up a passkey on X. go to Your account > Settings and privacy > Security and account access > Security > Additional password protection. Select in this menu Switch switch. You will then need to enter your password and follow the prompts.
If you change your mind and want to delete your passkey, follow the same steps. After entering your password, you will see the option Delete the switch.
X says it won’t require users to sign up for passkeys, but it’s not a bad idea to do so if you find other multifactor authentication methods (such as entering a code from an authenticator app would be difficult). The passkeys also effectively override X’s proprietary SMS-based two-factor authentication method. .