[OpenID] Quick question about the Yahoo buttons

[Martin Atkins]

Max Metral wrote:
> I like the idea of having larger provider icons on my consumer site 
> because it helps people realize they can use OpenID even when they have 
> no idea what it is.  But what confuses the daylights out of me is where 
> that button is supposed to go.  Yahoo has this page to “grab a button” 
> with no actual information about where the hell the link should point:
> 
>  
> 
> http://developer.yahoo.com/openid/loginbuttons.html
> 
>  
> 
> Am I supposed to just point them at the existing OpenID form when they 
> click this or is there some more hand-holding process that Yahoo offers 
> given that their users have to enable their accounts?  I realize there 
> is potentially some session negotiation that has to occur with my 
> server, just not sure how that’s supposed to go and what URLs it would use…
> 

My understanding is that your Yahoo! button should behave exactly as if 
the user had entered "yahoo.com" into your normal OpenID login form and 
submitted. It's really just a shorthand to save the user from typing 
that in.

This will of course only work if you have an OpenID 2.0-capable relying 
party, since Yahoo! supports only 2.0 and uses the 2.0 "directed 
identity" feature to support the above.