Here is a script that track user login/logout times on a website. It's a simple script that I have used on some of the sites I've made. Also with this script you can see how many users are online at your site.
For this you need first a site with a 'login to enter' (member based community site). You also need a database to keep the users and the records of their login/logout times..Abandon occurs or Session.Timeout expires. That is when a user hit logout or quits your application.
Login and logout monitoring is an important aspect of time and attendance monitoring. This form of monitoring automatically records employees’ system user names and the time employees log in and log out when using computers during working hours. Computer monitoring software is the most suitable way to record employee login and logout.
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