title: Can I get an LMS-specific or org-specific user identifier in a Desire2Learn LE LTI launch?
body: <p>By default, an LTI launch sent from the D2L LE provides the <code>user_id</code> property to uniquely identify the user making the LTI launch; however, this user ID can't be directly used with the LMS or most other institution systems to refer to the user: it is specific to LTI launches. Can I configure the LTI launch to provide a way to identify the user that I <em>can</em> directly use with the LMS or with other organization services (such as an LMS user ID, or a user log-in name)?</p>