A data transducer having an air bearing surface is used to reduce thermal pole tip protrusion. A representative vibration isolating handle may include a body, a grip part and an elastic member. Either the sponge or the string can be radio-opaque. The vehicle control unit enables the immobilizer function only after successful decoding of the encoded rotational speed signal. Thus, the updating appears to be instantaneous, since the entire updated data is immediately available upon starting the rollback. When the oscillating beam is exposed to a magnetic field, the magnetic field induces an oscillating electromotive force that generates an oscillating electrical signal along the beam.