The invention provides an identification device and method. The device includes a pattern adapted and configured to be read optically by a reader to obtain information. The pattern is formed at least in part by electrically conductive material. The device also includes a resonant circuit configured to resonate at a resonant frequency, the resonant circuit formed at least in part from the electrically conductive material of the pattern. The device may include a plurality of conductive members and may be adapted and configured to be read optically by a bar code reader. The plurality of parallel conductive members may be formed in a serpentine pattern or a continuous winding pattern, among others. The resonant circuit may also be configured to act as a dipole. Each of the conductive members may be connected by a straight conductor at an end of each of the conductive members.