These are unique markers with a pre-programmed ID number designed for permanent unambiguous marking of the utility network. In addition to the direct sections of the underground network they can mark strategic points of the network such as connections, crossing with another network, underground shafts, manholes etc. GPS coordinates of the Smart Marker’s location along with text and pictures are stored in the Marker Database software. Since all information is linked to a specific Smart Marker ID number it provides the user with accurate data about the placement of their underground utility.