Triggers help to replace the conventional four-fingered grip style, making the game easier to play. Triggers created exclusively for PUBG Mobile assist players in moving, turning, aiming, and shooting. Triggers, unlike human fingers, do not sweat and do not leave fingerprints on the phones' touchscreens. A trigger strategy is any of a family of techniques used in a non-cooperative game that is repeated. A trigger strategy player initially cooperates but punishes the opponent if a measured amount of defection (i.e., the trigger) is recognized.