Ohh no, I had no clue the repo collection was so extensive… I will have a look through those.
EDIT: Had a look, nothing that seems to involve handling these parts of the flow:
I think that functionality is only in the VivoKey app which is not open source from what I can see (or I am blind) also i would have to involve server side updates to allow another way of notifying the device that a scan is required or some similar mechanism (such as by scanning your implant it checks to see if there is a pending auth request).