How to get client MAC address by a access on a website?

Question

I have my website, and it records the number of visitors, IP and time of access...

I want to identify each visitor... I think that this was possible recording IP Add

Answer 1

Can't you just have them store a cookie, so that when they come back they can be uniquely identified? No username/password requirement.

http://en.wikipedia.org/wiki/HTTP_cookie