| 摘要 |
A method for activating an optical article includes providing an optical article, wherein at least one mark is disposed on the optical article, wherein the mark comprises an optical-state change material in an initial state, the initial state preventing the optical article from being read by a player; deriving an unlock code by cryptographic operations on an optical article operatively coupled with a POS equipment and a data input from a medium encrypted with a cryptographic algorithm; deriving a toggling signal from an unlock code, and applying the toggling signal to the at least one mark resulting in changing the optical-state change material to a final state, the final state allowing the optical article to be read by the player; wherein the toggling signal comprises a set of values corresponding to the respective states of each of a plurality of marks on the surface of the optical article, and wherein applying the toggling signal results in setting each of the marks to either one of an initial state or a final state, corresponding to the value for the mark in the toggling signal.
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