An electronic device including a memory storing instructions; and a processor that executes the instructions to perform a process including: identifying a registered device through a scan, after identifying the registered device, connecting with the registered device based on identification information of the registered device and a preset password, to establish a communication connection with the registered device, requesting, through the established communication connection, infrared codeset information from the registered device, and after receiving the requested infrared codeset information from the registered device, transmitting, to the registered device through the established communication connection, a request for authentication of the registered device, and transmitting, to the registered device over infrared light, an authentication signal including the infrared codeset information, for authenticating the registered device.