Thanks Guys, well explained. I think i,m getting there.
So if i get a mark on a host, i could potentially use spoof on all the devices in that host? So i could breeze through maglocks, mess with cameras, operate lifts (sorry i mean elevators, i,m from England!)
Of course, the mark might not last as the host detects and erases my mark ? Oh wait, you can't spoof a host i,ve just remembered. Presume you could spoof a security spider though ?