The present invention is directed to a method and apparatus for storing, referencing, retrieving, and graphically displaying spatial and non-spatial related information of a mobile computing device, such as a laptop computer or a cellular telephone. The films can be used for shield layers andor pole piece layers in a magnetic head. The method may comprise measuring an initial value of interface-state density in the test dielectric, exposing the coated test dielectric to a concentration of atomic hydrogen in a remote plasma, and then measuring a post-exposure value of interface-state density in the test dielectric.