If I remember rightly, you can download a spreadsheet full of KO2001 sentences if you can prove ownership... how does anyone prove they own the book?

I only ask because I have a deck of ~2500 Cantonese sentences from a couple of textbooks which some other people have been asking for. I've tried emailing the publishers asking if I can distribute it but haven't had a response (even though I've tried three or four times), so I figure a halfway solution would be just to give it out to people who own the books.

Help much appreciated

The usual approach seems to be to request that people email you a photo showing both (a) their copy of the book and (b) their email address on a bit of paper. For example, there's this thread for KM.

Sweet, cheers.