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Originally Posted by FizzyWater
I don't think that's true. The DRM in B&N's ePub's is based on the user's name and the credit card assigned to the account at the time the book was downloaded. (Normally the one at the time of purchase, but a user could update their credit card and redownload the books with the new information).
It's basically the old eReader (Palm Digital Media/Peanut Press) DRM wrapped around the ePub.
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B&N's DRM is still a variant of Adobe's ADEPT encryption and as such, uses Adobe's encryption server software. It just "activates" the DRM behind the scenes when you download from B&N. They pay a fee to Adobe to license their encryption like everybody else does (
almost everybody else... for all those sticklers for detail waiting to pounce
).
The eReader (pdb) DRM is different... kinda. B&N was still delivering epubs in pdb containers to Mac users (with the different DRM) up until very recently (at least I'm
assuming they still don't do that, anyway).