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Re: Is there a way to identify the a user in a web request?

From: Henry Story <henry.story@bblfish.net>
Date: Fri, 24 May 2013 12:42:25 +0200
Cc: leon@dcs.shef.ac.uk, Semantic Web <semantic-web@w3.org>
Message-Id: <BDAFB54B-064D-4AC6-9E85-EB3C003945F1@bblfish.net>
To: Melvin Carvalho <melvincarvalho@gmail.com>

On 24 May 2013, at 12:36, Melvin Carvalho <melvincarvalho@gmail.com> wrote:
> On 24 May 2013 12:27, Henry Story <henry.story@bblfish.net> wrote:
> 
> On 24 May 2013, at 12:14, Leon Derczynski <leon@dcs.shef.ac.uk> wrote:
> 
>> It's been traditional for crawlers to specify an email or web URI in the "From:" header of any HTTP requests they make; this could readily be used for an identifying link.
>> 
>> All the best,
> 
> You could also use a Link header to put that information.
> But you don't really want to be sending this around automatically, and without the user
> getting to decide if he wishes to authenticate. with https the server can ask
> the client for identifying info, and the client can decide to give it or not.
> See http://webid.info/spec
> 
> Identification and authentication are different problems.
> 
> Consider the postal service.  You traditionally identify by writing your name on an envelope.  Historically people have used things like 'royal seals', or 'registered post' for some extra layer of auth on top.
> 

You do that in the postal system, so that if your mail cannot reach its destination it is easy to send a
response back. With HTTP it is easy to send a response back because your TCP connection will
fail if you cannot connect. 

> A preferred authentication system should not be an impediment to the ability to identify in a simple intuitive way, imho

Well you can do that by using the Link Headers perhaps. http://tools.ietf.org/html/rfc5988
You can add any metadata using that, including authoriship of the content using WebID for
example. I am speaking of the plain vanilla WebID as defined here
  https://dvcs.w3.org/hg/WebID/raw-file/tip/spec/identity-respec.html
The question is finding use cases for it. 


>  
> 
>> 
>> 
>> Leon
>> 
>> 
>> On 24 May 2013 11:53, Melvin Carvalho <melvincarvalho@gmail.com> wrote:
>> In most communication protocols it's possible to specify a sender
>> 
>> For example, when I send a letter I can write my address on the back
>> 
>> When I make a phone call, it's possible to have "caller display" to see who's calling
>> 
>> When sending an email I can see who the email is from
>> 
>> But on the web, it's not obvious how to do this
>> 
>> Does anyone have a solution to this, or why it may be a bad idea?
>> 
>> 
>> 
>> -- 
>> Leon R A Derczynski
>> Research Associate, NLP Group
>> 
>> Department of Computer Science
>> University of Sheffield
>> Regent Court, 211 Portobello
>> Sheffield S1 4DP, UK
>> 
>> +45 5157 4948
>> http://www.dcs.shef.ac.uk/~leon/
> 
> Social Web Architect
> http://bblfish.net/
> 
> 

Social Web Architect
http://bblfish.net/


Received on Friday, 24 May 2013 10:42:59 UTC

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