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Re: Comments/Questions on Media Capture Streams – Privacy and Security Considerations

From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 29 Oct 2015 16:17:14 +0900
Message-ID: <CABcZeBN42bkv6bRHrgb7rbnY2FapBgBG1tkT63UZcGC-+-bO1g@mail.gmail.com>
To: "Mike O'Neill" <michael.oneill@baycloud.com>
Cc: Rigo Wenning <rigo@w3.org>, Martin Thomson <martin.thomson@gmail.com>, "public-privacy (W3C mailing list)" <public-privacy@w3.org>, Mathieu Hofman <Mathieu.Hofman@citrix.com>, Harald Alvestrand <harald@alvestrand.no>, Nick Doty <npdoty@w3.org>, "public-media-capture@w3.org" <public-media-capture@w3.org>
There's really not much point in having a a persistent permission for camera
and microphone that is measured in hours, because that means that the
vast majority of times when people want to use these devices (like one
video call every day or two) they will be prompted for permission.

-Ekr


On Thu, Oct 29, 2015 at 4:08 PM, Mike O'Neill <michael.oneill@baycloud.com>
wrote:

> Even when there is a visual indication people can miss it or not understand
> what it is . Given the sensitivity of having a "hot" mike/camera,
> persistent
> permissions should also have an expiry so even if people are unaware of
> them
> they will not be there for perpetuity.
>
> In general all permissions should have an expiry in my view, with the
> duration reported when the permission is requested. (i.e. this should be
> part of the permissions API, not just MediaCapture). Those that are less
> sensitive may have a longer duration but MediaCapture should be relatively
> short (hours?).
>
>
> Mike
>
>
>
> -----Original Message-----
> From: Rigo Wenning [mailto:rigo@w3.org]
> Sent: 29 October 2015 06:52
> To: Eric Rescorla <ekr@rtfm.com>
> Cc: Martin Thomson <martin.thomson@gmail.com>; public-privacy (W3C mailing
> list) <public-privacy@w3.org>; Mathieu Hofman <Mathieu.Hofman@citrix.com>;
> Harald Alvestrand <harald@alvestrand.no>; Nick Doty <npdoty@w3.org>;
> public-media-capture@w3.org
> Subject: Re: Comments/Questions on Media Capture Streams – Privacy and
> Security Considerations
>
> On Thursday 29 October 2015 15:37:12 Eric Rescorla wrote:
> > On Thu, Oct 29, 2015 at 3:35 PM, Rigo Wenning <rigo@w3.org> wrote:
> > > On Thursday 29 October 2015 15:04:05 Eric Rescorla wrote:
> > > > Chrome and Firefox do both of the two things listed in this quoted
> block
> > > >
> > > > 1. Inform the user that the devices are hot.
> > >
> > > Ok, in this case I can understand that if one has a visual indication
> that
> > > mic
> > > and camera are "on" the need for an additional prompt is somewhat moot.
> > >
> > > > 2. Provide mechanisms for revoking consent.
> > >
> > > This is then a question of usability. Is clicking on the visual
> indication
> > > allowing to revoke the consent/permission?
> >
> > Yes, generally.
>
> In this case, my earlier criticism was based on insufficient information. I
> think this does what it is supposed to do. I still think that persistent
> (forever) permissions are a mistake. But this is mitigated by the fact that
> the browser indicates when mic and camera are "on".
>
>  --Rigo
>
>
Received on Thursday, 29 October 2015 07:18:25 UTC

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