Monitoring of the processes that are running in the area of interest penetrates all human activities. Appropriate space arrangement of independent magnetic sensors allows contactless detection of moving objects containing hard or soft ferromagnetic as well as processes accompanied by changes of magnetic fields generated by electric currents.

Our results obtained in various environments suggest high information value contained in the magnetic field. Consequently there exist wide areas of application, particularly for 'intelligent objects and areas'. Changes in 'the magnetic map' visualize events, which are not demonstrative in acoustic or light spectra, and therefore they are difficult to detect by human beings.

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