Latest related research shows natural polyisoprene – nanostructured carbon composite (PNCC) as a promising piezoresistive material for soft pressure sensors. The main advantages of PNCC over conventional sensors are exceptional sensitivity in finger pressure range and possibility to be embedded into soft structures. The current PNCC can be made when certain amount (usually percolative concentration) of high structure electroconductive filler is dispersed into elastomer matrix and vulcanized afterwards. In this work we specify the percolation threshold for natural polyisoprene rubber filled with Degussa Printex XE2 extra electro-conductive high structure (nanostructured) carbon black, depending on methods of dispersing. After obtaining optimal composition we present a completely soft PNCC pressure sensor prototype, made using multi-gradient approach, when elementary layers with different filler concentration are cured together and forms uniform sensor body with integrated soft electrodes. Afterwards we couple it with simplified analog impulse counter. The prototype system elaborated could be used for counting of interface events between sensor and external environmental factor. If multiple sensor grid approach is used, it could be possible to estimate the distribution and intensity of the external pressure on soft, flat-like surface. These results could be evaluated as a step towards the artificial skin, capable to sense non-destructive interface of the external structure.