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Re: Privacy implications of automatic alternative selection (Re: Acessibility of <audio> and <video>)

From: T.V Raman <raman@google.com>
Date: Thu, 11 Sep 2008 15:50:09 -0700
Message-ID: <18633.41121.341729.105438@retriever.corp.google.com>
To: jan.richards@utoronto.ca
Cc: vtsaran@yahoo-inc.com, hsivonen@iki.fi, public-html@w3.org, wai-xtech@w3.org, singer@apple.com

Correct. This type of system should always be designed based on
"capabilities" -- and *not* based on *dis*abilities.

Jan Richards writes:
 > 
 > TV's approach was taken in the "IMS AccessForAll Meta-data 
 > Specification" (which is now an ISO standard ISO/IEC 24751) which let 
 > users specify what information they wanted without specifying any 
 > disability information (http://www.imsglobal.org/accessibility/).
 > 
 > Cheers,
 > Jan
 > 
 > 
 > 
 > 
 > 
 > Victor Tsaran wrote:
 > > +1 for Raman's comments.
 > > V
 > > 
 > > -----Original Message-----
 > > From: wai-xtech-request@w3.org [mailto:wai-xtech-request@w3.org] On
 > > Behalf Of Henri Sivonen
 > > Sent: Thursday, September 11, 2008 10:38 AM
 > > To: HTML WG
 > > Cc: W3C WAI-XTECH; Dave Singer
 > > Subject: Privacy implications of automatic alternative selection (Re:
 > > Acessibility of <audio> and <video>)
 > > 
 > > 
 > > The privacy implications of using media queries came up on the telecon.
 > > (The tacit assumption was that revealing that one has a given disability
 > > is a privacy-sensitive matter.)
 > > 
 > > The choice of alternative media streams gives the content provider
 > > information that correlates with the user's disabilities (unless all
 > > alternatives were downloaded so that the content provider couldn't tell
 > > with alternative was actually consumed).
 > > 
 > > If the user has to select from alternatives, the information about the
 > > choice is leaked to the content provider at that point.
 > > 
 > > Media queries (or any other automatic selection mechanism), on the other
 > > hand, would allow content providers to probe the user's
 > > disability-correlated settings when the user visits a page without
 > > taking specific further action on the page.
 > > 
 > > --
 > > Henri Sivonen
 > > hsivonen@iki.fi
 > > http://hsivonen.iki.fi/
 > > 
 > > 
 > > 
 > > 
 > 
 > -- 
 > Jan Richards, M.Sc.
 > User Interface Design Lead
 > Adaptive Technology Resource Centre (ATRC)
 > Faculty of Information (i-school)
 > University of Toronto
 > 
 >    Email: jan.richards@utoronto.ca
 >    Web:   http://jan.atrc.utoronto.ca
 >    Phone: 416-946-7060
 >    Fax:   416-971-2896
 > 
 > 

-- 
Best Regards,
--raman

Title:  Research Scientist      
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Received on Thursday, 11 September 2008 22:51:35 GMT

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