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护照、签证和官方旅行文件是世界上最需案例保护的文件。因为这些文件运行起来大约超过十年,所以,材料和安全性能都要从长期考虑慎重选择。此文检验在现行的旅行文件中各种各样的光学防伪技术以及讨论为适应未来的使用这些技术还需要些什么。
Passports, visas and official travel documents are the most needed case protection documents in the world. Because these files have been in operation for more than a decade, material and safety performance must be carefully chosen from a long-term perspective. This article examines a wide range of optical anti-counterfeiting techniques in current travel documents and discusses what else needs to be done to adapt these technologies for the future.