On 9/20/06, <b class="gmail_sendername">Drummond Reed</b> <<a href="mailto:drummond.reed@cordance.net">drummond.reed@cordance.net</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
(Note that those<br>simple, human-friendly names you assign to them still need to be unique --<br>from your perspective -- or else you won't be able to distinguish between<br>them yourself.)</blockquote><div><br>Easy for you to say,
<span style="font-style: italic;">Drummond!</span> smile, but I have more than one friend named, "John." This opens the door to all kinds of confusion, like when I'm talking to my wife about our friend "John" - assuming (often stupidly) that she knows
<span style="font-style: italic;">which</span> "John" - and she is assuming it's some <span style="font-style: italic;">other </span>"John" I'm talking about.<br><br>I.e., we don't actually insist on uniqueness among "those simple, human-friendly names" we assign to people. Sometimes we can distinguish among them anyway - by context; and sometimes we can't.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">It's another example of how making things really, really simple for the end-<br>
user is really, really hard.</blockquote><div><br>Indeed!<br><br>Good luck with your work!<br>Matthew<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
But someone's got to do it ;-)<br><br>=Drummond (i-name: =drummond.reed, <a href="http://xri.net/=drummond.reed">http://xri.net/=drummond.reed</a>)<br><br>-----Original Message-----<br>From: <a href="mailto:general-bounces@openid.net">
general-bounces@openid.net</a> [mailto:<a href="mailto:general-bounces@openid.net">general-bounces@openid.net</a>] On<br>Behalf Of John Kemp<br>Sent: Wednesday, September 20, 2006 5:52 AM<br>To: 백주성<br>Cc: <a href="mailto:general@openid.net">
general@openid.net</a><br>Subject: Re: Identity Uniqueness Problem - Can openid solve it?<br><br>백주성 wrote:<br>> Identity Uniqueness Problem<br><br>Note ^^^^^ /identity/ Uniqueness problem. There's a difference between
<br>an identifier, a unique identifier, and an identity ( basically a<br>collection of identifiers)!<br><br>><br>> I think that<br>><br>> Identifier should be one which he/she really want.<br>><br>> Identifier can be modified as his/her wish.
<br>><br>> Identifier should not be unique.<br><br>An identifier is something that identifies you. In other words, it puts<br>you in a set (potentially a set containing only one element if it is a<br>unique identifier for you) of those identified by that identifier.
<br><br>An identity consists of some attributes about you. Those attributes ae<br>often identifiers. My name "John" is an identifier. If you said "create<br>a set of all people called John", I'd be in that set. In other words, I
<br>am identified by that identifier.<br><br>John is, of course, not a unique identifier.<br><br>Many companies assign /unique/ identifiers to an individual. Such an<br>identifier has the purpose of uniquely identifying a single individual
<br>(or thing).<br><br>Imagine that you have a bank account - if someone needed to put money<br>into that bank account, they'd want to ensure it was the bank account of<br>the single entity that they wished to pay. It would be pretty bad if
<br>they couldn't uniquely identify the bank account!<br><br>So, there's some services that need to uniquely identify an individual<br>(ie. banking, government etc.) There are some services that provide<br>better service by uniquely (or partially) identifying an individual. If
<br>a service knows it's you, uniquely, it can customize its service (what<br>are your preferences for news content - likely not the same as mine?)<br>And then there are also many services that need only /partially/<br>identify you (your post code is an identifier for you, in that you would
<br>fit into the set of all people who live in that postal area, and could<br>be used to give you the weather report for your post code).<br><br>OpenID seems to be focused on the use-cases for uniquely identifying an<br>individual.
<br><br>And in my opinion, I don't think a /user/ should ever need to know his<br>or her unique identifier assigned by some identity provider and used at<br>same service provider.<br><br>- John<br>><br>><br>><br>
> How do you think about that?<br>><br>><br>><br>><br>> ------------------------------------------------------------------------<br>><br>> _______________________________________________<br>> general mailing list
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