I presume that they all behave on an honor system to not make use of their obvious advantages (Troi having the hardest time adapting) for the sake of a friendly game. Geordi has stated that he only glances after the hand. Data likely has a masking subroutine. Worf… is Worf.

We see that mindset called out in “The Neutral Zone” where the time displaced entrepreneur doesn’t have the self discipline to refrain from accessing shit he’s not privy to.