Log in to a user's JumpCloud account;
After supplying your username and password details you will be asked to verify your identity.
When asked to sign in with your passkey select the option "Security Key", then click 
;
You will now be asked to touch the Fido2 key (in the case of a Fido key with a fingerprint reader you will need to swipe your finger on the key);
Once the key has been touched you will be logged in to your JumpCloud account.