W3C home > Mailing lists > Public > public-html-media@w3.org > February 2013

RE: Identifying the type of device for DRM purposes

From: Andrew Livingston <Andrew.Livingston@bbc.co.uk>
Date: Tue, 12 Feb 2013 16:23:17 +0000
To: "'Mark Watson'" <watsonm@netflix.com>, Henri Sivonen <hsivonen@iki.fi>
CC: "<public-html-media@w3.org>" <public-html-media@w3.org>
Message-ID: <F3234D24CC1DA24DAEBC22CF89D16FC507006C@BGB01XUD1009.national.core.bbc.co.uk>
That's also our position - i.e. that the user agent string is unlikely to be sufficiently trustworthy. Sorry if this was unclear.

Andrew Livingston
Rights Executive, Rights Business Development, TRNG

-----Original Message-----
From: Mark Watson [mailto:watsonm@netflix.com]
Sent: 12 February 2013 16:21
To: Henri Sivonen
Cc: Andrew Livingston; <public-html-media@w3.org>
Subject: Re: Identifying the type of device for DRM purposes


On Feb 11, 2013, at 11:56 PM, Henri Sivonen wrote:

> (Re-sending to the right mailing list.)
>
> On Fri, Feb 8, 2013 at 7:44 PM, Andrew Livingston
> <Andrew.Livingston@bbc.co.uk> wrote:
>> 2) We require the ability to securely identify a type of device, and enable
>> or disable video playback based upon the answer.
>> While the BBC seeks to make as much of its programming as technically
>> possible available to all devices, the reality is that it cannot. Content
>> from third parties in particular is often licensed for certain platforms
>> only, and while we continue to push against this practice where possible it
>> still exists as a requirement at this time. Because of this we will need to
>> be able to enable or disable availability of some content based on the type
>> of platform. The browser user agent is not sufficient for this
>> identification.
>
> Do you mean that the user agent string does not provide enough
> information or that the information is not trustworthy enough when its
> authenticity is not vouched for by the CDM? If the former, could you
> please elaborate on what information is needed that is typically not
> in the user agent string?

Henri,

I can't speak for the BBC's requirements, but for our part the UA string is insufficient because it is not vouched for by the CDM or some other similarly secure component.

....Mark

>
> --
> Henri Sivonen
> hsivonen@iki.fi
> http://hsivonen.iki.fi/
>
>
> --
> Henri Sivonen
> hsivonen@iki.fi
> http://hsivonen.iki.fi/
>
>



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Received on Tuesday, 12 February 2013 16:24:18 UTC

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