Golf data recorder with integrated missing club reminder and theft prevention system

A golf club component, adapted to be coupled to a golf club, the golf club component comprising:

• the golf component coupled to a golf club;
• a first light sensor which has an output;
• a second light sensor configured to take one or more measurements of light intensity in response to a change of state of the output of the first light sensor, wherein the change of state of the output of the first light sensor causes the second light sensor to be activated;
• a logic circuit coupled to the first light sensor to receive the output and coupled to the second light sensor;
• an RF transmitter coupled to the logic circuit;
• a timer circuit coupled to the logic circuit, the timer circuit being configured to cause the logic circuit to repeatedly cause the RF transmitter to transmit a first signal indicating that the golf club has been removed from a golf bag, and wherein the logic circuit is configured to cause the RF transmitter to transmit a second signal indicating that the golf club has been replaced into the golf bag, and wherein the first signal is transmitted in response to one or more light measurements from the second light sensor and the second signal is transmitted in response to one or more light measurements from the second light sensor.