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May I use a permitted program to record information about players from hands in which I am not playing?
No. You may only collect hand histories and player information from hands in which you are a participant.
PokerStars defines an "Unfair Advantage" as a User accessing or compiling information on other players beyond that which the User has personally observed through the User's own game play.
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mehr unter
http://www.pokerstars.com/poker/room/prohibited/