[OpenID] OpenID and Friendfeed

[Allen Tom]

Oh, I like this a lot. If the user signs in with an OP that shares email 
address, the RP can determine if it already has an account with the same 
email address, and offer to merge to accounts. If not, the user is 
really a new user, and should probably bypass the account merging step.

A tricky issue could arise if the RP creates a new account for the 
OpenID user (because the RP has not seen that email address before), and 
later on, someone tries to register an account (using the traditional 
non-Open registration flow) using that email address. This could get 
hairy if they happen to be different people, and the OP had a stale or 
incorrect email address.

Allen


Chris Messina wrote:
> Trazzler does a pretty good job with this -- using Facebook Connect. 
> I've documented the steps here:
>
> http://wiki.openid.net/Trazzler-profile-linking 
> <https://wiki.openid.net/Trazzler-profile-linking>
>
> Chris
>
> On Thu, Apr 30, 2009 at 11:59 AM, David Recordon <david at sixapart.com 
> <mailto:david at sixapart.com>> wrote:
>
>     Hey Santosh,
>     I agree that when supporting multiple login mechanisms, it's
>     important for the site to let you easily merge accounts.  One way
>     to do this is to request your email via SREG or AX and proactively
>     look out for you.  Another approach is when you login with a new
>     identifier, to ask if you already have an account and let you
>     merge then.
>
>     --David
>
>
>     On Apr 29, 2009, at 8:06 PM, Santosh Rajan wrote:
>
>
>         I have a friendfeed account with my gmail address. Friendfeed
>         now supports
>         Google and facebook login.
>         So I log in with my google account. No problem. I also have a
>         facebook
>         account with the same email address.
>
>         When I log in with my Facebook account it see's me as a new
>         user obviously.
>         They cant get your email address from facebook. So I add the
>         same email
>         address to this account. I logout and login with google again
>         and it takes
>         me to this new account!
>
>         Then I close my browser and login again with my facebook and
>         it recognizes
>         my old account! No problem.
>
>         Now this is the problem. Most sites maintain accounts based on
>         email
>         addresses. It is is very difficult to integrate third party
>         signin's
>         whithout email addresses. Friendfeed seems to have pulled it
>         off with some
>         glitches though.
>
>         If OpenId needs to seemlessly integrate with RP's email based
>         authentication
>         SREG email is an absolute necessity.
>
>         Also please see my blogpost on a related subject on Facebook here.
>         http://santrajan.blogspot.com/2009/04/facebook-support-for-openid-farce-or.html
>         http://santrajan.blogspot.com/2009/04/facebook-support-for-openid-farce-or.html
>
>
>         -----
>
>         Santosh Rajan
>         http://santrajan.blogspot.com http://santrajan.blogspot.com
>         -- 
>         View this message in context:
>         http://www.nabble.com/OpenID-and-Friendfeed-tp23307101p23307101.html
>         Sent from the OpenID - General mailing list archive at Nabble.com.
>
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> -- 
> Chris Messina
> Open Web Advocate
>
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