Abstract: Electronic identification device, notably a key, intended to be used with an electronic lock and comprising in a conducting body (16) two recesses (8,10) arranged facing each other and separated by an intermediate wall (14), an opening (12) being provided in the intermediate wall between the two recesses. Two conducting elements (22,28) are arranged in the two recesses and in the opening, these two elements being electrically and mechanically connected to each other with the aid of a stud (26) driven into a blind hole (34) respectively associated with the two conducting elements (22,28). The electronic unit (2) is electrically connected to the body (16) and to the two conducting elements (22,28) with the aid of conducting pads (48,50) arranged on a sheet (38) placed in one of the two recesses (8) between one plate (24) and the intermediate wall (14). The conducting elements (22,28) are electrically insulated from the conducting body (16).