A contactless power supplying device is provided. The cells may be selectively and locally seeded on an upper and lower surface of a planar sample or specimen or on either or both of an interior luminal surface and exterior surface of a hollow sample or specimen. Based on the embodiments of the present invention, port scan packets are sent based on multiple port pairs, so that the port scan packets can reach the destination end through multiple paths, so as to detect multiple paths between the source end and the destination end. Installation and removal of the cover is thus afforded only to one in possession of the tool.