Abstract: The invention relates to methods for manufacturing an optical devices and optical devices incorporating optical blocking material on the read-side surface of the optical disc. A protective layer and an optical blocking material are applied to the read-side surface of an optical disc. The protective layer, for example, may prevent corrosive solvents in the optical blocking material from damaging the read-side surface of the optical disc. Applying the optical blocking material to the read-side surface of the optical disc may prevents an optical disc player from reading the optical device until the optical blocking material deactivated. Once activated, the optical blocking material becomes sufficiently transparent to allow the optical disc player to read the optical disc.