This thread started a while back even before ePUB really started taking off. The problem I saw arising was this. ePUB might be an open standard but it fell short in one major area "Defining DRM"
This posses a real compatibility problem. Even though ePUB is an "Open Standard" ePUB + DRM is not. ePUB + DRM is just as bad as any propriatry solution or in my view even worse than a proprietary solution. This is because a vendor might claim they support ePUB but add their own DRM. And lead to confustion.
Well lest FF to the present, and sure enough that is exactly what we have. We now have two different version of ePUB + DRM, with a third one on it's way.
The idea was that we created an icon, more along the idea of branding that tied to OS functionality, to denote a true open standard. If you as a customer saw this Icon on the store front or Device Vendor you would know this ePUB would work without any confusion on your part.
The first part was to established two brand one with no DRM one with DRM, where the DRM was truly an open standard not owned by any one company.
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