Re: [Page Visibility] Spec -- privacy concern from Sreeram Ramachandran on 2011-05-14 (public-web-perf@w3.org from May 2011)

From: Sreeram Ramachandran <sreeram@google.com>
Date: Fri, 13 May 2011 17:06:49 -0700
To: Kyle Simpson <getify@gmail.com>
Cc: public-web-perf@w3.org
Message-ID: <BANLkTinUDz4-1DwJXUOgS0SR84BEReKt+w@mail.gmail.com>

On Fri, May 13, 2011 at 16:50, Kyle Simpson <getify@gmail.com> wrote:
> One major privacy concern I (and others I chatted with on Mozilla's
> #developers IRC) have is that third-party scripts (like ad providers, etc)
> would be able to monitor this type of data (page visibility) and gain
> valuable (to them!) information which a user might not want them to have,
> such as how long I stay viewing a page, etc.

Doesn't this privacy concern also apply to other existing mechanisms,
such as window.onblur/onfocus/onpageshow/onpagehide? It's not clear to
me that the visibility API introduces additional privacy-violating
capabilities on top of those.

Received on Saturday, 14 May 2011 07:42:39 UTC