Wearable electronic device and method for identifying controller by using wearable electronic device

A wearable electronic device comprising:

• a wireless communication circuit;
• a sensor;
• a first recognition camera and/or a second recognition camera;
• memory storing instructions;
• and
• at least one processor comprising processing circuitry,
• wherein the instructions, when executed by the at least one processor individually or collectively, cause the wearable electronic device to:
• identify that a first controller and a second controller, each of which has a light-emitting diode, LED, disposed therein, are detected within a designated space, through at least one of the first recognition camera and the second recognition camera;
• transmit, via the wireless communication circuit to the first controller, a control signal which causes the LED disposed in the first controller to be operated at a first turn-on time;
• transmit, via the wireless communication circuit to the second controller, a control signal which causes the LED disposed in the second controller to be operated at a second turn-on time;
• and
• based on recognizing that the LED disposed in the first controller is operated at the first turn-on time, control a turn-on time and a recognition operation period of at least one of the first recognition camera and the second recognition camera such that the recognition operation period is longer than light emission timing of the LED disposed in the first controller.