Maybe this the secret that Kabuto is holding back behind that infamoue face.
tell me what you think. Maybe it isn't the same type of tattoo. maybe it's used to open gates or for using one of his jutsus. Can you imagine someone not having to do hand seals to pull off their jutsu and just haveing a pre ordered tech. excuse the joke XD. But seriously that way no one could copy it espiacially if a certain Shirangan (sp) carrying someon. Or it would be alot harder to detect the tech. Who the hell knows tell me what you think.