An electronic device comprising: a biometric sensor , including a light emitting unit comprising at least one light emitting diode (LED) configured to output light and at least one light receiving unit , configured to obtain biometric information using the at least one LED and the at least one light receiving unit; a battery ; a power receiving circuit configured to receive a wireless power signal from a wireless charging device; and a processor operatively coupled to the biometric sensor and the power receiving circuit, wherein the processor is configured to: receive a specified wireless power signal from the wireless charging device, using the power receiving circuit ; characterized in that the processor is further configured to: after receiving the specified wireless power signal, determine whether the wireless charging device is authenticated based on an optical signal from optical communication with the wireless charging device, using the light receiving unit and the light emitting unit of the biometric sensor ; when the external charging device is authenticated, perform wireless charging of the battery with a first power; and when the external charging device not authenticated, perform wireless charging of the battery with a second power, wherein the second power corresponds to a normal charging, and wherein the first power corresponds to a charging faster than the normal charging. a biometric sensor , including a light emitting unit comprising at least one light emitting diode (LED) configured to output light and at least one light receiving unit , configured to obtain biometric information using the at least one LED and the at least one light receiving unit; a battery ; a power receiving circuit configured to receive a wireless power signal from a wireless charging device; and a processor operatively coupled to the biometric sensor and the power receiving circuit, wherein the processor is configured to: receive a specified wireless power signal from the wireless charging device, using the power receiving circuit ; characterized in that the processor is further configured to: after receiving the specified wireless power signal, determine whether the wireless charging device is authenticated based on an optical signal from optical communication with the wireless charging device, using the light receiving unit and the light emitting unit of the biometric sensor ; when the external charging device is authenticated, perform wireless charging of the battery with a first power; and when the external charging device not authenticated, perform wireless charging of the battery with a second power, wherein the second power corresponds to a normal charging, and wherein the first power corresponds to a charging faster than the normal charging. after receiving the specified wireless power signal, determine whether the wireless charging device is authenticated based on an optical signal from optical communication with the wireless charging device, using the light receiving unit and the light emitting unit of the biometric sensor ; when the external charging device is authenticated, perform wireless charging of the battery with a first power; and when the external charging device not authenticated, perform wireless charging of the battery with a second power, wherein the second power corresponds to a normal charging, and wherein the first power corresponds to a charging faster than the normal charging. <EOS>