Apparatus, methods, and articles of manufacture consistent with the present invention provide a check validation scheme wherein a payor’s signature is digitized, encrypted and embedded on the front of the check using glyphs. The method comprises a first step of providing a dielectric volume and forming a plug opening within the dielectric volume. The plate hole diameter can be determined by comparing one of the size-adjacent metrology hole diameter with the respective art work metrology hole diameter. The birefringent film is particularly suited for decorative, security, authentification or identification applications. The server also may update the reference values which change during operation. 2, and the loading stage is performed at a lower pressure than the pressure of the reaction stage.