Uniquelogin authentication

This document describes how to set up Uniquelogin Authentication in Moodle.

This is integrated into Moodle 1.9 onwards.

The Unique Authentication module is available for download from the Moodle plugins directory: http://moodle.org/plugins/view.php?plugin=auth_uniquelogin

Overview

The goal of Uniquelogin Authentication plugin is to make sure that each user in Moodle can only have one active session simultaneously.

The code is prepared to work on Moodle 1.9, 2.X, 3.X and 4.X as it addresses modifications in session table and database access through global DB instance.

The administrator can configure whether teacher and administrator roles are affected by the plugin. A user is considered a teacher if he has a teacher role at any course on Moodle.

Once the user logs in, the existing previous session is terminated. Note that this does not work with SingleSignOn plugins.

Assumptions

To work properly, the plugin needs the following:

1. Database-stored sessions are enabled (see Notes/Tips bellow).
2. Uniquelogin is active in authentication plugins page.

Installation

1. Download the plug-in file from http://moodle.org/plugins/view.php?plugin=auth_uniquelogin
2. Unzip the file to authentication plug-ins folder moodle/auth/
3. On the Administration Block, click on Site administration » Plugins » Authentication » Manage authentication
4. Enable the authentication plug-in Unique login
5. Press the plugin arrow button to move the plug-in to the top position

Notes/Tips

• As mentioned in Assumptions, you must use database-stored sessions to use this plug-in. To achieve this follow these steps:

1. On the Administration Block, click on Site administration » Server » Session Handling
2. Enable the setting Use database for session information

See also

• Using Moodle: User authentication forum