A method comprising: receiving by an electronic device a search request for a searching object device from a terminal device ; broadcasting by the electronic device a pre-defined search signal in response to the search request; characterized in that it further comprises the steps of: analyzing by the electronic device, in response to a response signal being received from an external device (300-1) in response to the pre-defined search signal, a pattern of the received response signal and determining by the electronic device whether the external device is the searching object device; transmitting by the electronic device, in response to the external device being determined as the searching object device, intensity information of the received response signal to the terminal device to determine a position of the external device which is determined as the searching object device; receiving by the terminal device intensity information of a plurality of response signals received from the external device which is determined as the searching object device from a plurality of electronic devices; and determining (S16) by the terminal device a position of the external device determined as the searching object device based on the intensity information of at least three of the plurality of response signals. receiving by an electronic device a search request for a searching object device from a terminal device ; broadcasting by the electronic device a pre-defined search signal in response to the search request; characterized in that it further comprises the steps of: analyzing by the electronic device, in response to a response signal being received from an external device (300-1) in response to the pre-defined search signal, a pattern of the received response signal and determining by the electronic device whether the external device is the searching object device; transmitting by the electronic device, in response to the external device being determined as the searching object device, intensity information of the received response signal to the terminal device to determine a position of the external device which is determined as the searching object device; receiving by the terminal device intensity information of a plurality of response signals received from the external device which is determined as the searching object device from a plurality of electronic devices; and determining (S16) by the terminal device a position of the external device determined as the searching object device based on the intensity information of at least three of the plurality of response signals. analyzing by the electronic device, in response to a response signal being received from an external device (300-1) in response to the pre-defined search signal, a pattern of the received response signal and determining by the electronic device whether the external device is the searching object device; transmitting by the electronic device, in response to the external device being determined as the searching object device, intensity information of the received response signal to the terminal device to determine a position of the external device which is determined as the searching object device; receiving by the terminal device intensity information of a plurality of response signals received from the external device which is determined as the searching object device from a plurality of electronic devices; and determining (S16) by the terminal device a position of the external device determined as the searching object device based on the intensity information of at least three of the plurality of response signals. <EOS>