Latent Image Optical Authentication — Invisible in Normal Light, Revealed by an LED
How It Works
The authentication image is not printed with ink. It is recorded as a microstructure imprinted directly onto the film surface by nanoimprint lithography, engineered to reflect and scatter incident light in specific directions only.
Under diffuse illumination — indoor lighting or daylight arriving from many directions — the reflected light spreads evenly, so the contrast created by the microstructure never emerges and the film reads as an ordinary surface.
When a directional point source such as an LED lamp or a smartphone flash is applied, the difference in reflectance between structured and unstructured areas becomes pronounced and the pre-set latent image becomes visible.
Because the image exists as physical nano- and micro-scale geometry rather than as visual content, high-resolution scanning and printing cannot reproduce it. And since no dedicated reader is needed, distributors and end consumers can verify authenticity instantly with a smartphone.
Key Features
Applications
| Field | Examples |
|---|---|
| Brand protection | Authenticity labels and tamper seals for cosmetics, spirits, luxury goods and pharmaceuticals |
| Industrial parts | Genuine-part tags for automotive and electronics, supply chain traceability |
| Identity documents | Employee badges, membership cards, certificates and warranties |
| Finance and ticketing | Gift certificates, admission tickets, vouchers |
| Packaging | Decorative surface finish that doubles as a security element |
FAQ
Latent Image Authentication — Verify in Three Seconds
STEP 01 ≫
Normal light
STEP 02 ≫
Apply an LED
STEP 03
