A first and a second longitudinal bias-applying films are formed via a first mask at both sides of a magnetoresistive effective element film so that the difference in surface level between the magnetoresistive effective element film and the first and the second longitudinal bias-applying films is set within \xb120 nm. Process executable in this system, in which the stored data and the authorizations or values associated with the data are especially well protected against access by unauthorized persons are also described. In another embodiment, the hub comprises an alignment feature to promote proper alignment of the driveshaft with respect to the hub when the driveshaft is inserted into the axial bore, wherein the alignment feature is eliminated under load. The transducer has solder bases formed by exposing the lead frame at the inside surface of the case. The resonant frequency is increased by adding a material over the reduced area to stiffen the connection between the torsional hinges and the support anchors.