When two images are matched, a partial image S is registered in advance, mutual relative position is obtained when the partial image S and an image I indicate the largest overlap. The present invention successfully associates call and subscriber registry together, preferably solves security problems of the having registered legal PC subscriber and largely improves security performance when the subscriber uses the resources. A gate insulating layer is formed over the substrate to cover the polysilicin island. Methods of forming the composite material and reducing acceleration forces in an impact utilizing the composite material are also provided.