I believe page location analytics are used for the amount of money that goes to Kindle Unlimited authors, also. It can't just track the very last page in the b

I believe page location analytics are used for the amount of money that goes to Kindle Unlimited authors, also. It can't just track the very last page in the book that you read, because authors were gaming that by encouraging people to immediately skip to the last page of very large works they didn't otherwise care about. Instead there's some kind of heuristic that tries to figure out if you've more-or-less-normally read the book.