The technological advancements in Figs. 2&4 on two full paged do not mentioned in Abstract. That is why some keywords would be useful. Fig. 1 is too huge and could be reduced, at least twice. The main idea was presented ten years before at CLAWAR 2004 Conference and finally published in the Positioning journal [www.scirp.org/journal/PaperInformation.aspx?paperID=5051#abstract] - issuu.com/r_sklyar/docs/imperceptible. Lack of the theoretical validation. Moreover, a single equation was placed in Discussion. The constructed "highly sensitive giant magnetoresistive (GMR) sensor elements" should be compared thoroughly with previously reported, and clearly presented in figures.