Session Timeout Warning Popup with Countdown Using jQuery and PHP. For example, you are logged in to your Gmail account to check e-mails, then you forget to log out of your account and go out. There is a possibility for someone to access your Gmail account and send malicious emails to everyone in your friend’s list or do something else. To avoid such malicious access by someone, we need to find user activity and show Session Timeout Warning Popup with a countdown to log out a user.

Its super easy to use, customize and implement in your system