Over the past four chapters, we have systematically introduced Image Technology’s optical anti-counterfeiting portfolio. Together, they covered 35 visible (overt) optical security features and the first 8 covert optical technologies that operate beyond naked-eye recognition.
As a result, these articles have attracted strong interest from global readers working in identity documents, brand protection, packaging security, and industrial authentication. If you are new to this series, we recommend reviewing the earlier chapters to gain a complete understanding of our optical security framework.
Why Covert Optical Security Matters
As counterfeiting techniques continue to advance, visible features alone are no longer sufficient for high-risk applications. While visual effects may be imitated, covert optical anti-counterfeiting technologies add a deeper layer of protection.
Specifically, these features embed security information that can only be verified under controlled optical conditions, with specialized tools, or through secure digital systems. Therefore, they play a critical role in professional authentication and forensic verification.
In this final chapter, we introduce the remaining seven covert optical security technologies developed and deployed by Image Technology (IMAGE TECH), thereby completing our comprehensive optical anti-counterfeiting system.
Covert Optical Security Technologies (9–15)
9. Eerie Effect
This feature produces unusual transformations and dynamic rotational effects under specific optical conditions.
Applications: ID documents, stamps, tickets, and anti-counterfeit packaging.
10. Secret Manual
Specific character features are embedded at predefined positions and remain invisible under normal viewing conditions.
Applications: ID documents, stamps, tickets, and anti-counterfeit packaging.
11. Digital Graphic Encryption
Encrypted graphic algorithms embed access paths directly into images. Consequently, hidden information can be decoded via dedicated apps or software platforms, creating a secure link between physical products and digital verification systems.
Applications: ID cards, security documents, and brand protection systems.
12. Fiber Encryption
Readable information is arranged along ultra-fine, fiber-scale lines. As a result, this technology forms a highly concealed security layer that is extremely difficult to replicate.
Applications: ID cards, tickets, secure documents, and packaging.
13. Pixel Encryption
Custom characters are used as pixel units to construct encrypted graphic patterns. In this way, micro-structure design combines with optical encryption logic.
Applications: ID cards, security labels, and anti-counterfeit packaging.
14. Micro-Code Technology
Hidden information—such as micro QR codes or encrypted digital images—requires microscope magnification and dedicated software for decoding.
Applications: Labels, packaging authentication, and product traceability.
15. Polarization Encryption
Embedded images or text appear only when viewed through polarized light sources or polarization filters.
Applications: ID cards, secure documents, and advanced packaging security.
A Trusted Optical Security Partner
With more than two decades of experience in optical security design and manufacturing, Image Technology (IMAGE TECH) is a reliable optical anti-counterfeiting supplier serving global clients. Our partners include governments, institutions, brand owners, and companies across the packaging and printing industry.
Today, our technologies are widely applied in:
- [Brand Protection Solutions] — helping brands combat counterfeiting, improve authentication, and strengthen consumer trust.
- [ID & Document Security Solutions] — providing layered optical protection for identity cards, licenses, certificates, and secure documents.
Each solution is built on real project experience, tailored optical design, and strict quality control. As a result, our technologies remain reliable in both mass production and high-security applications.
A Complete Optical Security Framework
From early design concepts to a multi-layered security system serving diverse global markets, Image Technology’s optical anti-counterfeiting solutions follow one clear principle:
Using technology to secure products and innovation to enhance brand value.
This five-part series offers a structured overview of our current optical anti-counterfeiting capabilities. Although the series concludes here, our innovation continues.
As market demands evolve and optical technologies advance, Image Technology will keep developing smarter, more adaptive, and forward-looking security solutions.
Thank you for following the Optical Anti-counterfeiting Technology Series. We look forward to sharing more innovations with you in the future.
