A technique facilitates performance of seismic profiling, such as three-dimensional vertical seismic profiling. The geophysical location information may come from a global positioning system receiver or any other mechanism for determining a location for the device. Such a shielding region alleviates the need to use metallic shielding material or EMI spraying throughout many parts of the terminal. Relocation conditions corresponding to performances required for each group are set in advance, and reallocation of tiers according to the relocation conditions is performed. The code pattern image is constituted by a combination of a plurality of the component image having a predetermined shape.