History: OpenID

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            ! OpenId
OpenID authentication (introduced in ((TikiWiki 2.0))) is an open and decentralized identity system, designed "not to crumble if one company turns evil or goes out of business". 

Basically, it allows users to select a single username (and password) that can be used by any website that uses OpenID authentication.

See http://openid.net for more information.


!!To enable OpenID
*Select __OpenID and Tiki__ as the ((Login Authentication Methods|Login Authentication Method)) from the ((Login Config|Login Admin Panel)).
+The ((Module login box|Login Module)) will now include an OpenID field:
+{img src="img/wiki_up/login_module_openid.png" alt="Login module with OpenID"}

!!To use OpenID
#A user must have (or create) an OpenID. See http://openid.net/get/ for information on getting an OpenID.
#In the Tiki ((Module login box|Login Module)), enter your OpenID.
+TikiWiki will attempt to validate the user's OpenID. The user will be requested to authenticate their ID with their OpenID provider.
#Upon successful authentication, TikiWiki will allow you to:
**Create a new TikiWiki login.
**Associate an existing login with your OpenID.
+{img src="img/wiki_up/openid_valid.png" alt="Associating an OpenID with a TikiWiki login"}
#To create a new TikiWiki login, enter username and email address. 
+TikiWiki will register the new username and associate it with your OpenID.
+ %%%
+If you already have a TikiWiki login, enter your username and password in the Login area. 
+TikiWiki will associate the existing TikiWiki login with your OpenID.
+ %%%
#To login, you can now simply use your OpenID on the ((Module login box|Login Module)).