When I enter my email to sign into https://www.icloud.com/, it shows an option to sign in with a passkey. When I select it, it tries to get a passkey from my password option, and there seems to be no option to create one in Apple account settings, or on the betas on macOS 15 and iOS 18.
1 Answer
Passkeys are created automatically when you have a device with iOS 17/macOS 14 and iCloud Keychain enabled for your iCloud account.
You cannot add passkeys to devices that don't meet these requirements, as there's no way to "create" a passkey for other devices.