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Old 08-26-2010, 12:28 PM   #1
pdurrant
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Simultaneous Device Usage: Unlimited. DRM Free?
There has been some discussion of the meaning of the appearance of "Simultaneous Device Usage:" in the Product Details of Kindle Books at Amazon's Kindle Store.

I believe it's pretty simple. If a book has
Quote:
Simultaneous Device Usage:Unlimited
in the Prodcut Details then it is DRM-free. If some other limit is given, or if "Simultaneous Device Usage:" does not appear, then the book has DRM.

This simple rules works for all the Amazon books I've bought.

I will change my opinion on this if anyone can produce a counter-example. That is, either a book that is listed with "Simultaneous Device Usage: Unlimited" and yet has DRM, or that does not have "Simultaneous Device Usage: Unlimited" and yet is DRM-free.

I don't believe that there is such a counter-example.
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Old 08-26-2010, 12:31 PM   #2
AnemicOak
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As far as I know you're correct. IIRC when you decide to use DRM then you have to choose the Device Usage and unlimited isn't an option.
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Old 08-27-2010, 11:29 AM   #3
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That seems to be the way it works.
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