Hi @Tobias_Moritz ,
I did ask Packt to use watermarks on the Companion PDF containing all the diagrams that people with the printed copy can download via URL provided in the book.
I do not have any visibility in what is going on on publisher's side of things and will have to reach out to them for clarification.
The DRM-free PDF is bound to be widely shared on the Internet- I've seen that situation with Tim Hall's books. Promo PDFs were watermarked with headers containing reviewer's email addresses, so even in DRM-free format it was an acceptable way to deliver digital materials.
Can you tell me if the PDF and the EPUB from Packt have your email in the headers?
Let me talk to Pact and see if they can, somehow, enable purchase registration on their site that will allow same personalized PDFs to be delivered to Amazon or Packt Portal buyers.
@CheckPointerXL , can you tell me what are the downsides with Kindle format downloads and Kindle cloud reader experience, if any?
Thank you,
Vladimir