Quote:
Originally Posted by Hitch
It's not really cheap because the watermarking has to be individualized and recorded. That means that largely, it's done by humans. That's not remotely cheap, compared to regular DRM schema. That's what I was saying. Adding a simple bit of text/mark isn't expensive, per se. The expensive part is the individualization and recordation.
Hitch
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Individualization can be done automatically by software (likely by some mix of email address, purchase timestamp and book info which is then hashed). Then just keep a copy in a database presumably connected to customer purchase information/record.
Creating watermarked ebooks and storing that info isn't the problem. It's the enforcement and active monitoring of piracy sites, torrents, etc. that's expensive. Plus, it doesn't prevent casual piracy. Because of this, it's not worth it for most individual authors to implement.