Counter to Track Visitors via MAC Address

This project may not even be possible, but we'll see what you think. I am developing a website with the need to (as accurately as possible) count unique visitors to the website. Each unique visitor gets counted ONE time in a 24 hour period. We accomplish this through IP tracking and setting a cookie. However, multiple users behind a router with NAT translation are only counted ONCE currently. This is a problem since we anticipate that college students will be heavy users on our site, and only ONE of them will get counted if 50 of them are behind the same educational firewall. SO, we understand there may be a way to track visitors according to MAC address. See the multi-page discussion and banter about this here: [login to view URL] I'm looking for someone who can either make this happen OR, solve the problem of multiple-users behind a NAT router counting as only one visitor. Thoughts?? ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows? (depending on the nature? of the deliverables): a)? For web sites or? other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software? installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform I'm running a Linux box. Php, Perl, the works.