Quote:
Originally Posted by cromag
As far as I know the term "unlimited simultaneous device usage" only means that the book does not have any form of DRM (Digital Rights Management, or "Copy Protection") applied.
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That is not completely true. Most books are now delivered to newer Kindle apps and devices in KFX format, and those are always encrypted even if they are marked
Simultaneous Device Usage: Unlimited.
There are ways to download these books in older formats without DRM, but that might not always be the case in the future.