http://www.eqemulator.net/forums/sho...7&postcount=10
That is all you need. It's currently running on TGC and works fine. Just find the void ClientList::GetCLEIP references and tack that code after them. Of course, players are going to complain because if they get kicked midfight, they have to wait 5 min to get back in, but oh well. It fixes several dupping/trading exploits and allows us to enable shared plat.
Mort is right of course, multiple toons on the same account opens the door for many exploits, which make obtaining items or gearing a guild let's say trivial.