FYI, yes, it's very easy for a hacker to change his player ID since it's not computed on the server but only reported by the client when entering a server.
The solution is to use the BE GUID for player identification and banning, as it is based on the (validated) cd-key and entirely computed on the server.
More information can be found here: http://forums.bistudio.com/showthread.php?t=96228
My friend installed and played arma 2 OA on my computer through his steam, and i bought Dayz but now i have deleted everything reinstalled it and i still have his Player id and am unable to play DayZ someone please help.
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LQuest / MercenaryS / Planetside 2