Remote PC lock
Starting from version 1.2.9 you also can block your Windows account if you enrolled your Authenticator for PC login (both passwordless or password-based).
Just go to the account that you signed in to and tap the "Lock Workstation" button. Workstation will be locked.
That is how this button looks like for the passwordless accounts:
That is how this button looks like for the password-based accounts:
