Quote:
Originally Posted by JSWolf
The watermark is part of the metadata.
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Yes. You can't see it unless you use software that can decode the internals of the Kindle book, such as kindleunpack.
The watermark is encrypted so the information it includes is not completely known. However by comparing watermarks between books it has been shown that it includes identification of the specific book, the app or device to which it was delivered, and the Amazon user account involved.