Chinese passport: A safe journey forged by high-tech security technology

    China's passport anti-counterfeiting technology employs a variety of high-tech measures to ensure the authenticity and security of the passport. The following is a detailed introduction to the anti-counterfeiting technology of Chinese passports:

I. Paper and Printing Technology
    Watermark Paper: The Chinese passport uses watermark paper as a special printing material. When you open the passport and observe the visa page through the light, you can see watermarks of "Passport Page Number" and a watermark pattern of 56 ethnic groups singing and dancing. Each page has a different pattern. The use of this watermark paper increases the difficulty of forging the passport.
Intaglio Printing: On the second and third pages of the passport, the seven characters "People's Republic of China", the national emblem pattern, and the Great Wall pattern are printed using intaglio printing technology. This printing technique makes the graphics and text rich in layers and three-dimensional, with a distinct tactile sensation when touched, further enhancing the anti-counterfeiting ability of the passport.

II. Optical Anti-counterfeiting Technology

• Optically Variable Ink: On the third page of the passport, the "Electronic Chip Mark" is printed with optically variable ink. When you shake and observe it, the color of the "Electronic Chip Mark" changes between purple and gold, and a bright light band rolls left and right. The use of this ink enhances the visual effect and anti-counterfeiting performance of the passport.
• High-Diffraction Color Pattern: In the middle of the passport's data page, there is a high-diffraction color national emblem pattern. At a specific angle, the pattern is vividly colored; when you shake and observe it, the national emblem pattern shows a color flow and change effect. This technology makes the passport more aesthetically pleasing visually and increases the difficulty of counterfeiting.
• Diffractive Dynamic Transformation Pattern: In the upper left corner of the passport's data page, there is a diffractive dynamic transformation pattern. When you shake and observe it, you can see the dynamic transition and transformation effect of the two groups of text "CHN" and "China". This pattern change enhances the anti-counterfeiting performance of the passport.

III. Color Replacement Technology
    On the right lower corner of the personal photo on the passport's data page, there is a "Chinese Seal" shaped pattern. At a specific angle, you can observe that the pattern is composed of the two characters "China" and color blocks, with different colors for the text and the color blocks. When you rotate the document horizontally and observe it, the colors of the text and the color blocks are replaced. This color replacement technology further enhances the anti-counterfeiting ability of the passport.

IV. Infrared and Ultraviolet Fluorescent Ink Technology

• Ultraviolet Fluorescent Patterns: The passport features ultraviolet fluorescent patterns depicting the beautiful landscapes of various administrative regions in China. The genuine passport has bright colors, rich ultraviolet fibers, and the upper half of the document number shows a fluorescent reaction; while the counterfeit passport has dull ultraviolet images, missing ultraviolet fibers, and no fluorescent reaction on the document number.
• Infrared Light Illumination: Under infrared light, only the lower half of the document number on the data page of the genuine passport can be seen, while the counterfeit passport shows the complete document number. This technology enables the passport to exhibit unique anti-counterfeiting features under infrared light.

    In summary, China's passport anti-counterfeiting technology employs a variety of high-tech methods, including paper and printing technology, optical anti-counterfeiting technology, color-shifting technology, and infrared and ultraviolet fluorescent ink technology. The application of these technologies not only enhances the anti-counterfeiting ability of the passport but also makes it more visually appealing and distinctive.