a network comprising : a plurality of different receptacles for facilitating a connection to different information networks requiring different access authorization , each different receptacle optically or electrically coupled to one and only one different information network , each different receptacle having an inner surface with a unique first geometry ; and a plurality of different plugs for optically or electrically coupling with the different receptacles , each different plug having a unique second geometry , each unique first geometry corresponds to one , and only one , unique second geometry of a plug such that plugs and receptacles having corresponding unique first and second geometries are mating pairs .