In a method for authenticating at least one of a media and data to be stored on said media, in order to prevent at least one of piracy, unauthorized access and unauthorized copying of the data stored on said media, a data message comprising modulation via at least one of pit depth, pit width and pit track comprising at least one authentication key or component thereof lo for authenticating whether said data message is authenticated, and wherein the modulation of the at least one of the pit depth, pit width and pit track cannot be readily altered, obscured nor removed from said data without simultaneously degrading or impairing a quality of an audible component of said data message, and wherein the data message is transmitted substantially free of the modulation of the at least one of the pit depth, pit width and pit track, thereby preventing a destination processor from reading and subsequently authenticating the data message.