No, you can use the Kindle without registering.
Registering doesn't affect how Calibre works with the Kindle.
Yeah, that is one thing I don't like about the Kobo, having to register. That was a nice thing about the Sony I had. I prefer not to have to register it.
However, if you don't register your Kindle, you can't use collections. Although since the last update, you might not want to, anyway.
Last edited by booklover6; 12-25-2013 at 05:39 PM.
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