Quote:
Originally Posted by mjdb
Another question about the Calibre Viewer.
I notice that it will not open the _CyBook Gen3 User Guide_, instead returning an error message that the Book is protected by DRM.
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Ah, I think I just answered my own question.
Rereading the Wiki Entry, I saw a sentence I had overlooked before
https://wiki.mobileread.com/wiki/MOBI#MOBI_DRM
"A third method used on some ebooks is to use a generic MOBI key. It has encryption but only using the generic MOBI key (not a PID-specific key). This means that can be read by any MobiPocket Reader software, on any device, but not by any non-MobiPocket software. "