An electronic device according to various embodiments may include a communication circuit and a processor, wherein the processor is configured to receive a streaming image photographed by a first external electronic device through the communication circuit from a first external electronic device, identify a start of a fastening action of a user with respect to a target connector based on the streaming image, periodically obtain sensor data from a second external electronic device worn on the user based on identifying the start of the fastening action, identify an end of the fastening action with respect to the target connector based on the streaming image, and determine whether the target connector is fastened based on the sensor data obtained from the start of the fastening action to the end of the fastening action.