I haven't seen much in library world outside of some talk/discussion.
I did come across one academia that did implement it:

http://blog.case.edu/jms18/2007/03/09/openid_server_integrated_with_cas

Not sure if it's taken off much otherwise in the academic or public
sector. I think quite a few are lucky to get any authentication
working well.

Ryan

On 3/22/07, William Denton <[log in to unmask]> wrote:
> I hadn't been too clear on OpenID but a week or two ago I listened to a
> recording of a talk about that explained it well.  I can't find it again,
> unfortunately, but you can take my word for it that it was pretty good.
>
> Is OpenID being used in libraries?  It struck me that it could work well
> for library systems that share resources: two systems that are part of the
> same consortium or provincial/state system; two neighbouring public
> systems that let people from one borrow at the other; academic libraries
> that want to make it easy for visiting profs and grad students to get
> temporary access to online resources; etc.
>
> Say I live in Lower Mowat but one day I'm in Upper Mowat, in the next
> municipality (or county, or whatever) over, visiting my tailor.  The two
> library systems are separate but share their resources.  I pop into the
> library to update my Twittering friends on my inseam measurement.  I don't
> actually have an account at the Upper Mowat Library, but I log in to one
> of their computers using my Lower Mowat-supplied OpenID identifier, and
> the Upper Mowat system recognizes where I'm from and gives me access to
> everything.
>
> Bill
> --
> William Denton, Toronto : miskatonic.org : frbr.org : openfrbr.org
>