- From: Ronan Heffernan <ronansan@gmail.com>
- Date: Fri, 22 Mar 2013 15:42:50 -0400
- To: Justin Brookman <justin@cdt.org>
- Cc: public-tracking@w3.org
- Message-ID: <CAHyiW9LVQFCgcgMMsVc2ofJMappZqQrw_hpDBk3S==2MdOzq7w@mail.gmail.com>
Responding to a DNT:1 signal with an acknowledgement that a company follows DNT, and will abide by the restrictions (and permitted uses) therein, is easy. Responding with real-time lookups of whether OOBC exists is quite difficult (in many cases impossible), especially for large-scale systems that use CDNs and other distributed processing, and systems that do not receive technical information required to perform OOBC lookups until after some browsing has already happened. If I understand the part of your proposal about the client-side software overriding the user's DNT:1 with a DNT:0, I find that to be a troubling and dangerous suggestion, far more open to abuse and less transparent to users than non-real-time OOBC determination. --ronan On Fri, Mar 22, 2013 at 3:29 PM, Justin Brookman <justin@cdt.org> wrote: > The 48 hours doesn't really matter if a consumer doesn't have visibility > into the answer. And anyway, in either case, you are seeking to hold and > use the data for up to 53 weeks pursuant to the proposed market research > exception. > > I still do not understand why you cannot operate in-band or otherwise > configure the user agent to send DNT:0 signals using your client-side > software. I'm sure there are engineering costs and challenges to all > parties represented in the working group, but I had not heard before that > responding to DNT:1 and DNT:0 signals would be technologically unfeasible > (which would seemingly be more so for third parties without client-side > software). > > I also don't see how a conditional "C" signal helps. Without definitive, > machine-readable signals, it's hard to see how this system is accountable. > There is currently no general auditing requirement in the standard, and I > would be reluctant to put one in as an unnecessary burden and expense. > > Justin Brookman > Director, Consumer Privacy > Center for Democracy & Technology > tel 202.407.8812justin@cdt.orghttp://www.cdt.org > @JustinBrookman > @CenDemTech > >
Received on Friday, 22 March 2013 19:43:38 UTC