A laser indicator for golf enables a golfer to maintain a correct posture when he or she enjoys putting or driving a golf ball. The first module shifts a reference signal to a first shifted signal. The process includes receiving throttle position from the throttle position sensor, mass flow rate from the mass air flow sensor, and manifold pressure from the manifold pressure sensor. The permission querying module is for querying the user permissions stored in the first cache memory and the second cache memory, and respectively storing first information units and second information units in the first cache memory and the second cache memory.