Currently i am working on 1 site, its requirement is that, i have to get client systems unique identity, i am using REMOTE_ADDR but some time problem is that it gives me dynamic IP address sometime its common for whole organization, i want to get Uniq identity of any system from which system my site is access.. CAn i Get it through PHP or Java script, My site is in core PHP
Suggestion REquired from your side....
I think you should set a cookie with unique identifier on users' system so that when they revisit your website, you can identify the cookie and treat them as returning visitors, but this is not preferable if your site need a reliable way to identify users as user can clear cookies of his system when ever he wants, for general purposes, cookies are the best way to identify users. http://www.php.net/manual/en/features.cookies.php