Thank you for your comment. Yes, it is possible to import via ISBN scan. Currently, there are three ways to add a book:

- searching (which uses the Google Books API under the hood)

- manual addition (which nobody wants to do — I completely understand — but is the only option for old books that cannot be found online; I have a lot of these)

- scanning the ISBN (which also uses the Google Books API).

I'll certainly consider the labelling feature and add it to the backlog.