Re: ISSUE-5: What is the definition of tracking?

Fragmented or probabilistic tracking data might not be stored with a hash or other single identifier.  The privacy risk would, of course, be the same.  (I don't mean to be excessively nitpicky - a few months ago my team looked at a third party doing fingerprinting of just this sort.)

On Oct 27, 2011, at 9:02 AM, David Wainberg wrote:
> 
>> On Oct 25, 2011, at 2:13 PM, David Wainberg wrote:
>> 
>>> 
>>> On 10/24/11 8:18 PM, Jonathan Mayer wrote:
>>>> 
>>>> I would strongly oppose limiting our definition of tracking to only cover pseudonymously identified or personally identified data.  There are a number of ways to track a user across websites without a single pseudonymous or personal identifier.
>>> I'm not sure what you mean here. Can you provide examples?
>> Any means of tracking that relies on fragmented or probabilistic information.  For example, browser fingerprinting.  (See Peter Eckersley's paper "How Unique Is Your Web Browser.")
> Ah. I would have included that in pseudonymously identified, because if data is stored against it by the server, it will be stored against a hash or something based on the fingerprint.