getting client MAC address...

[Anon]

does anyone know how I can obtain a client's MAC address when they hit my web server? Any Apache environmentals I can use??

[jc94062]

You can't with PHP due to it being server sided, this has been discussed and rejected before, unfortunately :-(

The only option I though of was writing a C/C++ program to grab it and running that though PHP, but I'm not good enough in C to do that, so I kinda hit a brick wall.

[Anon]

the only way i know of is to send a ping to the client and read the arp-cache. but i guess its only working in an intranet without router.