See the WebAuthn/FIDO2 appendix for an overview about WebAuthn/FIDO2 in LAM.

Here you can manage your webauthn/FIDO2 devices.

You can register additional security devices and remove old ones. In addition, you can set a name for your devices. This helps if you need to remove a device at a later point.

If no more device is registered then LAM will ask you for registration on next login.