The present invention discloses a movable operation support system, used in clay target shotgun shooting learning, games and competition, which can be set up and operated in any location of the field. The device comprises an actuating ramp arranged on a test carriage and able to make the sensor go from a first position detecting presence of the rope to a second position detecting absence of the rope. Each of the state devices has a characteristic that is indicative of the state of the smart airbag. The memory device further includes a barrier layer between the first and second magnetic elements.