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RE: Closed non-embedded content???

From: Michael Pluke <Mike.Pluke@castle-consult.com>
Date: Fri, 19 Oct 2012 12:41:05 -0400
To: Kiran Kaja <kkaja@adobe.com>, Gregg Vanderheiden <gv@trace.wisc.edu>
CC: "public-wcag2ict-tf@w3.org" <public-wcag2ict-tf@w3.org>
Message-ID: <5735ED0D92A3E6469F161EB41E7C28A81D60952972@MAILR001.mail.lan>
I'm most definitely not an expert in the area of DRM, but it would seem to me that it would be the user agent that actually does the closing for many eBooks.

It seems to me that the software in the user agent assesses the rights that the particular user has to read the particular content. Having matched the user's rights with the permissions of the book the user agent actively limits (closes) what the user can and can't do (their rights). So it is the software that is closing off the functionality in response to the rights of the user and the embedded content.

I think that real closed content would somehow actively isolate itself without the user agent collaborating in that closure at all (i.e. it includes its own self-contained closure mechanism). Maybe this is how some DRM really works?

Best regards


From: Kiran Kaja [mailto:kkaja@adobe.com]
Sent: 19 October 2012 14:48
To: Gregg Vanderheiden; Michael Pluke
Cc: public-wcag2ict-tf@w3.org
Subject: RE: Closed non-embedded content???

But it is the user agent/eBook reader/hardware device that is closed and prevents access by AT. Adobe Digital Editions is an application to read protected eBooks. This application works perfectly well with assistive technology such as screen readers and screen magnifiers. If a certain other platform decides to block access to AT to their eBook reading application, it isn't the non-embedded content that is at fault.

Kiran Kaja
Adobe Systems

From: Gregg Vanderheiden [mailto:gv@trace.wisc.edu]
Sent: 19 October 2012 13:57
To: Michael Pluke
Cc: public-wcag2ict-tf@w3.org<mailto:public-wcag2ict-tf@w3.org>
Subject: Re: Closed non-embedded content???

yes  - a large percentage of ebooks to start.
Ditto for movies and anything else with DRM that blocks access by AT.

Gregg Vanderheiden Ph.D.
Director Trace R&D Center
Professor Industrial & Systems Engineering
and Biomedical Engineering University of Wisconsin-Madison
Technical Director - Cloud4all Project - http://Cloud4all.info
Co-Director, Raising the Floor - International - http://Raisingthefloor.org
and the Global Public Inclusive Infrastructure Project -  http://GPII.net

On Oct 19, 2012, at 7:48 AM, Michael Pluke <Mike.Pluke@castle-consult.com<mailto:Mike.Pluke@castle-consult.com>> wrote:

Is there such a thing as non-Web non-embedded content that is closed?

Can anyone think of any examples? We need to answer this question urgently. In all the cases that we can think of it is the device (i.e. the user agent) that is closed.

Best regards

Received on Friday, 19 October 2012 16:41:40 UTC

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