Google proposes to allow applications to reuse its own authentication process using <ahref="http://en.wikipedia.org/wiki/OpenID"class="urlextern"title="http://en.wikipedia.org/wiki/OpenID"rel="nofollow">OpenID</a> protocol (it means, if your are connected to Google, other applications can trust Google and let you in).
In Manager, go in <code>General Parameters</code>><code>Authentication modules</code> and choose Google for authentication module. This will use email as login name (for accounting, session explorer,…). If you want to access to other datas, you have to use Google in <code>General Parameters</code>><code>Authentication modules > User module</code>. Then in exported variables, you can ask only for :
<liclass="level1"><divclass="li"> “myfield ⇒ firstname” can be ””</div>
</li>
<liclass="level1"><divclass="li"> ”!myfield ⇒ lastname” must be set</div>
</li>
</ul>
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<p><divclass="noteimportant">A specific persistent session is created with this module, to store attribute values returned by Google. If this session is lost, Google will ask a confirmation for each requested attribute.
