Thread: Couple easy questions???
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Old 11-23-2016, 03:05 PM   #5
BetterRed
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Quote:
Originally Posted by SciFiWriter View Post
Question 2.
I would like to embed a special number into the file to identify it should someone break my confidence and leak a copy. How to do that? In the html editor?
  1. Embed a uuid in the files sent, maybe in the metadata (e.g. in an epub dc:identifier id="uuid_id" opf:scheme="uuid">uuid value</dc:identifier>). You can get uuids in bulk from here ==>> Online UUID Generator Tool. Save them to a csv file, and as they're used record the document and recipient names and date alongside the uuid.

  2. Put an invisible but unique (perhaps by varying the dimensions) watermark on the cover or other png image. If you find a bootlegged copy you can separate the watermark with Imagemagick, see last post in this thread ==> Conversion of PDF files to ZIP

BR
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