A method for representing and managing an inventory of overlapping multi-dimensional items such as advertising or ad impressions. Per the inventive method, the POSS compound is reacted with an acid to selectively cleave bonds in the POSS rings to add functionalities thereto for grafting, polymerization or catalysis, to thus form new familes of POSS derived compounds. Color coding or marking enables bur segregation and enables depth determination. The intermediate portion provides an electromagnetic conduction seal between the device and with at least one of another device andor the electrical enclosure.