- From: Chris Mejia <chris.mejia@iab.net>
- Date: Thu, 25 Oct 2012 16:19:58 +0000
- To: Walter van Holst <walter.van.holst@xs4all.nl>, "public-tracking@w3.org" <public-tracking@w3.org>
Walter, perhaps you should take your tech suggestion to the MRC, where it would actionable, if they find it valid for their Congressionally mandated purpose. Just a friendly suggestion, but as far as I know, they are not directly represented here. Chris Mejia | Digital Supply Chain Solutions | Ad Technology Group | Interactive Advertising Bureau - IAB On 10/25/12 11:53 AM, "Walter van Holst" <walter.van.holst@xs4all.nl> wrote: >On 2012-10-25 16:54, Dobbs, Brooks wrote: >> They are attempting to reliably indicate that some counting of ads >> was >> actually consumed or displayed to or made available to (insert term >> here) to "quality" recipients. Now, to your linkability question >> yes "quality" probably is an indication that they are a "real" >> person. >> So MRC or any audit company doesn't need an identified list of >> individuals who saw the million ads, but in many ways what they are >> saying is that these e.g. million impressions have enough linkability >> to them that I can assure you that they aren't "low quality" i.e. not >> a person. Without direct knowledge of MRC's secret sauce, I am sure >> that IP address plays a role in this as a primary source and that IP >> is very likely still used even where the cookie reads Opt_Out. I >> would > >A cryptographic hash of the IP-address, UA string, the first 7 bytes of >a 64 bit Unix timestamp salted with the date string would suffice to >provide a pretty hard to link identifier that would meet the needs as >you just described. > >But as you have indicated most of us don't know and the only ones >claiming to know haven't volunteered to provide further information so >far. > >Regards, > > Walter >
Received on Thursday, 25 October 2012 16:20:58 UTC