1. An operation method of an electronic apparatus, the method comprising:recognizing a face of a passenger in a vehicle through a sensor;
acquiring information on a position of the passenger and information on a position of a terminal in the vehicle;
storing, when a difference between the position of the passenger and the position of the terminal in the vehicle is within a preset distance, information on the recognized face in association with the terminal based on the acquired information;
recognizing a first terminal in the vehicle;
determining whether a first face associated with the first terminal is present among faces of one or more passengers in the vehicle, based on first face information stored in association with the first terminal; and
storing information on a second face among the faces in association with the first terminal when the first face is absent as a determination result.