[PHP] Tracking and Logging

How to get unique computer ID or any identification of the machine's user.

[camilord]

Can anybody help me about this problem?

I want to detect her or his computer. we all know we can get the IP address.. aside from the IP address, any unique identification about the computer they are using?

like any machine ID or something that predifine PHP function can handle in getting such information in the computer?

[justageek]

What exactly are you trying to do?

JAG

[whoisgregg]

Here's some past topics on the subject:

how to get the online user's MAC address using PHP [webmasterworld.com]
How to acquire MAC address in order to prevent fraud? [webmasterworld.com]

Both discuss the reasons why this is typically impossible to implement on a website. Here's a thread that provides code for the rare situation that it might work:

get mac address in php
php function that returns mac address, based upon arp and ip [webmasterworld.com]