hello,
i saw in some server there are so many players have double account or more
and i think it's one of a cheat way even it's not use any third party tools
in the server should be a Game Master that give warning to anyone that suspect have double account or more, and 'the double or more' should be banned if they still run the game in double account, they should choose only one character otherwise the other account is must be delete by Game Master/Admin.