Patent ID: 8646106

Claim:
An optical article for playback in a player comprising: a hardware article including at least one optical data layer; a first content stored on the hardware article; a second content stored on the hardware article; a control logic stored on the hardware article; a file stored on the hardware article, wherein the file is configured to adjust a value of a register from a default value to a non-default value when the control logic is read by the player, and wherein the file is configured to direct the player to play the second content without playing the first content when the register is set to the non-default value and to play the first content and then the second content when the register is set to the default value; and a mark comprising an optical state change material disposed in or on a surface of the hardware article such that the mark covers at least a portion of the control logic, wherein the mark is in one of a first optical state and a second optical state, and wherein the control logic can be read by the player only when the mark is in the second optical state.