Known Issues

This section covers known issues (as of May 11, 2021) when using 14.2+ Safari browser, SFSafariViewController, or ASWebAuthenticationSession.

1. User Verification (PIN Support)

Note

If a FIDO2 PIN does not exist on the YubiKey, iOS Safari WILL NOT prompt the user to create a PIN.

Required, Preferred, and Discouraged Parameters for User Verification

Feature Required Preferred Discouraged

User Verification (FIDO2 PIN)

Supported

Supported

Supported

“Required”, “Preferred”, and “Discouraged” are optional parameters sent to the client browser by the WebAuthn RP during user registration.