Is there a device ID available from somewhere?
I was just looking for some way to say that Kindle X is attached so that I could recognize it the next time it attaches to present just its configuration settings. If the device had no ID I guess I would default to using a default name and present/update the default settings.
I don't know if metadata.calibre is the right place for it (I see it uses a straight list of books so I don't know if you could add a new key without messing up anything that reads it. That might not be many programs - it would break my 1.3.3 version, but not my next one if I ever get it done
)
If a uuid was saved, it might need a name too, although that might not be needed in my case (I would just present settings based on which Kindle was attached and save according to uuid and library uuid). I notice in kiwidude's Book Sync plugin he also mentions lack of multiple device support. I think he just uses 1 list to sync whichever Kindle is next attached. To use multiple would require presenting a list to select from - and choosing from 1aX7 versus 2b84 might not be intuitive to users
