Security Hologram
Security holograms are very difficult to forge because they are replicated from a master hologram which requires expensive, specialized and technologically advanced equipment. They are used widely in several banknotes around the world, in particular those that are of high denominations. They are also used in passports, credit and bank cards as well as quality products. Herman Lopata, the President of the New York based Automatic Toll Systems, Inc., received a patent in 1987 for the credit card security hologram as part of his early work on high speed highway toll collection -- the predecessor of the modern EZ Pass type equipment.
Holograms are classified into different types with reference to the degree of level of optical security incorporated in them during the process of master origination. The different classifications are described below:
Read more about Security Hologram: 2D / 3D "hologram" Images, Dot Matrix, Electron-beam Lithography, See Also
Famous quotes containing the word security:
“The horror of class stratification, racism, and prejudice is that some people begin to believe that the security of their families and communities depends on the oppression of others, that for some to have good lives there must be others whose lives are truncated and brutal.”
—Dorothy Allison (b. 1949)