Anti-counterfeit medium, method for manufacturing the same and method for preventing counterfeiting

A method for manufacturing an anti-counterfeit medium, comprising the steps of:

• providing a reflection layer;
• supporting the reflection layer and a retardation layer on a base layer;
• and
• disposing a relief forming layer between the retardation layer and the reflection layer,
• dividing identification data to be recorded into a plurality of partial images and wherein the identification data includes biometric information;
• and
• providing a plurality of transparent areas each of which corresponds to a corresponding one of the plurality of partial images to be disposed adjacent to each other in a same plane so as to form the retardation layer, the plurality of transparent areas having birefringence and having optical axes which are oriented in different directions from each other in a rotation direction, and
• wherein the identification data comprises first identification data which is biometric information and second identification data which is non-biometric information being recorded in the retardation layer,
• wherein the biometric information includes at least one of facial information, fingerprint information, iris information, vein information, or a combination thereof,
• wherein the base layer comprises a biaxially oriented film,
• wherein the retardation layer includes
• at least a first image corresponding to a portion of the first identification data,
• at least a second image corresponding to a portion of the second identification data, and
• at least one third image which corresponds to a portion in which the first identification data and the second identification data are overlapped, the at least one third image being recorded in a transparent area of the plurality of transparent areas,
• wherein the anti-counterfeit medium is configured to display a first synthesized image corresponding to the second identification data, when viewed at a first angle,
• wherein the anti-counterfeit medium is configured to display a second synthesized image corresponding to a portion of the first identification data, when viewed at a second angle, and
• wherein each of the plurality of partial images comprises incomplete portions of the biometric information, the incomplete portions corresponding to fragments of the images.