Copyproof Achromatic Holograms For Embossing Application

More and more the media of holography is being used in security measures, against counterfeiting. This presentation will especially deal with the mass production of suitable embossed holograms. In the field of credit cards rainbow holograms are used predominentely as a security measure against counterfeiting. Although these holograms possess a relativ high degree of security it is still possible to copy them.