<p>The device has a support (21) receiving a set of contact areas on a face. The contact areas are allowed to extend to an edge (24) of the face and an electronic microcircuit, where the set of contact areas includes a set of conductive perforations. The support is arranged with a back face that comprises an antenna formed of a set of coils having two connecting ends. The perforations are arranged in a path of the contact areas when the device is inserted in a slot reader.</p>
