Continuing the discussion from Labs Feedback: 3DS 
:
I just came across the perfect experience for this feature (In my view) which was using the “Duo Mobile” app a 2FA app required by one of our software vendors. This app showed me a notification, I force-clicked much like the Microsoft Authenticator was prompted for my Biometric (fingerprint) and the notification went away, the login was approved.
Monzo - maybe not possible for first release but this experience was excellent and would be an ideal, secure and slick experience.
David