Uniquely identify one computer

Question

I work for a university, and i\'m implementing a PHP web app that needs to have different behavior when it is visited from one certain computer. The problem i am running in

Answer 1

You can set a cookie. This will be remembered by the client and transmitted to the server as part of every request. More information here: http://www.w3schools.com/PHP/php_cookies.asp

Answer 2

Some thoughts:

• Set a durable cookie. (Since FF is in kiosk mode, you should be safe from the users clearing it.)
• Have that kiosk use a different URL (perhaps with a query string parameter).

What I wouldn't do is work according to the machine's MAC address (which Gibson tells us is possible) or similar; too fragile when hardware gets fixed, etc.

Answer 3

Try this.

$something=$_SERVER['HTTP_USER_AGENT'];

To uniquely identify user check $something matches your own.(which is on your php code). if yes then proceed access.