If a player suspects someone at the table is card counting, they should remain discreet and avoid confronting the individual directly. Card counting is not illegal, but it is frowned upon by casinos, and the house may take action if they become aware of it. The player can choose to continue playing as usual or quietly inform the dealer or pit boss if they believe it’s affecting the fairness of the game. Staying focused on their own strategy is usually the best course of action.