The latest iOS 18.1 release has introduced an unexpected issue affecting FIDO2.1 Final keys, rendering them incompatible with the new update. This issue is not limited to Token2's security keys but impacts devices from all manufacturers adhering to the FIDO2.1 final specification.
We are actively investigating the root cause of this disruption and have reached out to Apple for clarification and resolution. FIDO2.1 is a critical standard for modern, secure, passwordless authentication, and ensuring its continued functionality is paramount.
In the meantime, we recommend users who rely heavily on FIDO2.1 keys for authentication to delay updating to iOS 18.1, if possible. We will provide updates as soon as we have further information from Apple or a timeline for a fix. Thank you for your understanding and patience.
Update (24.11.24): Apple has confirmed that this issue is planned to be resolved in iOS 18.2. Our tests with iOS 18.2 Private Beta 3 indicate that the issue has been partially addressed.
Update (28.01.25): A number of customers have reported that the issue is resolved after upgrading to iOS 18.3 and Sonoma 15.3.
Update (28.01.25): A number of customers have reported that the issue is resolved after upgrading to iOS 18.3 and Sonoma 15.3.