Secure data protection optically variable labels and foils

Abstract

Embodiments of the invention, therefore, provide improved systems and methods for tracking targets in a simulation environment. A security device having a first layer that carries indicia arranged to present covert information. Embodiments of the invention may include a second layer that carries decoding optical elements. In some embodiments, the second layer is arranged to be moveable relative to the first layer from a first position to a second position. In some embodiments, when in the second position, the optical elements serve to cooperate with the indicia so as to reveal the covert information for visual observation.

1 .- 61 . (canceled) 
     
     
         62 . A method for forming a security device, the method comprising:
 providing a first layer, the first layer having a first location and a second location, wherein the second location carries an indicia that comprises covert information that is not visible to human viewing;   coupling a second layer to the first layer using a weak adhesive, wherein the second layer carries decoding optical elements, wherein the second layer is positioned over the first location on the first layer, wherein the second layer is configured to be peeled off from the first layer while the optical elements remain intact and to be placed onto the first layer over the second location, and wherein, in the second location, the optical elements serve to cooperate with the indicia so as to make the covert information visible to human viewing.   
     
     
         63 . A method as claimed in  claim 62 , wherein the first location on the first layer includes an optically variable effect generating structure. 
     
     
         64 . A method as claimed in  claim 63 , wherein the optically variable effect generating structure comprises at least one of a diffractive and an interference optical device arranged to provide a visually authenticable image. 
     
     
         65 . A method as claimed in  claim 63 , wherein the covert information is provided within the optically variable effect generating structure. 
     
     
         66 . A method as claimed in  claim 65 , wherein the optically variable effect generating structure containing the convert information generates an achromatic effect and also generates a covert laser verifiable image. 
     
     
         67 . A method as claimed in  claim 65 , wherein the optically variable effect generating structure containing the covert information comprises a diffusing structure. 
     
     
         68 . A method as claimed in  claim 62 , wherein the indicia are encoded within variations in a periodic array structure and the decoding optical elements comprise a periodic array structure. 
     
     
         69 . A method as claimed in  claim 62 , wherein the indicia is defined by a demetalization pattern. 
     
     
         70 . A method as claimed in  claim 63 , wherein the demetalization pattern is provided within a reflective layer of the optically variable effect generating structure. 
     
     
         71 . A method as claimed in  claim 62 , further comprising placing the first layer onto a carrier formed of coated frangible paper. 
     
     
         72 . A method for forming a security device, the method comprising:
 providing a substrate;   providing a first layer on the substrate, the first layer having a first location and a second location, wherein the second location carries an indicia that comprises covert information that is not visible to human viewing;   coupling a second layer to the first layer using a weak adhesive, wherein the second layer carries decoding optical elements, wherein the second layer is positioned over the first location on the first layer, wherein the second layer is configured to be peeled off from the first layer while the optical elements remain intact and to be placed onto the first layer over the second location, and wherein, in the second location, the optical elements serve to cooperate with the indicia so as to make the covert information visible to human viewing.   
     
     
         73 . A method as claimed in  claim 72 , wherein the first location on the first layer includes an optically variable effect generating structure. 
     
     
         74 . A method as claimed in  claim 73 , wherein the covert information is provided within the optically variable effect generating structure. 
     
     
         75 . A method as claimed in  claim 62 , wherein the indicia are encoded within variations in a periodic array structure and the decoding optical elements comprise a periodic array structure. 
     
     
         76 . A method as claimed in  claim 75 , wherein the periodic array structure comprises an array of lines. 
     
     
         77 . A method as claimed in  claim 72 , wherein the indicia is defined by a demetalization pattern. 
     
     
         78 . A method as claimed in  claim 73 , wherein the demetalization pattern is provided within a reflective layer of the optically variable effect generating structure. 
     
     
         79 . A method as claimed in  claim 72 , further comprising placing the first layer onto a carrier formed of coated frangible paper. 
     
     
         80 . A method as claimed in  claim 72 , further comprising a hot stamping foil. 
     
     
         81 . A method for forming a security device, the method comprising:
 providing a substrate;   providing a first layer on the substrate, the first layer having a first location and a second location, wherein the second location carries an indicia that comprises covert information that is not visible to human viewing;   coupling a second layer to the first layer using a weak adhesive, wherein the second layer carries decoding optical elements, wherein the second layer is positioned over the first location on the first layer;   peeling off the second layer from the first layer while the optical elements remain intact; and   placing the peeled off second layer back onto the first layer over the second location, wherein, in the second location, the optical elements serve to cooperate with the indicia so as to make the covert information visible to human viewing.