A very popular and nifty plugin that prevents duplicate or multiple log-ins by the same user credentials, for both front-end and back-end. A wonderful and effective tool for websites that share or exchange potentially sensitive information amongst registered users.
Compatible with Joomla! 3.9.3 and PHP 5.3 or later and PHP 7.
User must either sign off the first session, or wait until the first session has expired. Super administrators can always have multiple log-ins.
Installation is so simple: just install the package at the Joomla! back-end. See instructions in the download package.
This freeware Trial version is very basic and for evaluation only. The Premium and Business editions are the 'real thing', with full frontend language support and additional options to allow multiple log-ins for specified groups and users. The Premium Edition is competitively priced and already miles more complete than the freeware version, but if you are running a professional website, you will never regret your purchase of the Business Edition.
The download link also provides access to the J2.5 version.
A working live demo is on http://joomla3.innato.nl
An instructional video is at the demo link