How to identify the Visitor

romy_mathew has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: How to identify the Visitor by ikegami (Patriarch) on Sep 11, 2011 at 20:23 UTC
`$cgi->remote_addr` (CGI) or cookies.	[reply] [d/l]
Re: How to identify the Visitor by LanX (Saint) on Sep 11, 2011 at 20:03 UTC
Ask facebook, they know! :-) Cheers Rolf	[reply]
Re: How to identify the Visitor by CountZero (Bishop) on Sep 11, 2011 at 22:00 UTC
What do you mean by "track"? CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James	[reply]
Re: How to identify the Visitor by Inexistence (Acolyte) on Sep 11, 2011 at 22:07 UTC
As poster above stated, CGI or Cookies are the easiest I'd recommend cookies, since you can normally track individual computers on a single IP using them. But you can't track them if they continually change cookies without either being a static IP and the only computer on that IP, or installing some plugin to identify them (IE what banking plugins do)	[reply]
Re^2: How to identify the Visitor by romy_mathew (Beadle) on Sep 12, 2011 at 20:30 UTC
Sorry my question was not very specific .....Suppose I find a IP visiting my website for more than 30 mins and want to identify the person or his personal information about him for that particular ip. How can this be possible, Is it possible to retrieve the information contained in cookies inserted by other websites.	[reply]
Re^3: How to identify the Visitor by Anonymous Monk on Sep 12, 2011 at 20:36 UTC
Contact the Police or FBI, obtain subpoena ...	[reply]
Re^3: How to identify the Visitor by Inexistence (Acolyte) on Sep 12, 2011 at 23:39 UTC
You can't utilize 3rd party cookies to obtain personal information. All you can do is supply them a questionaire and hope they fill in their personal details (unlikely) IP's can have multiple computers on them as I said above, so... There isn't in existence	[reply]