How 34,000 Tiny Holes Could Stop Counterfeiting

How 34,000 Tiny Holes Could Stop Counterfeiting
The new "ultra-capacity nano-photon sieve" can incorporate more than 34,000 nanoholes randomly distributed in its surface. Bastian Eichhorn/CC BY-NC-SA 2.0
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Scientists have found a way to potentially prevent counterfeiting in currency, documents, credit cards, and even IDs.

Many modern documents include holograms to enhance security, and they are generally difficult to replicate outside of an optical lab.

Although accurate recreation of these holograms is extremely challenging, a similar shiny, multi-colored look can be created using a mixture of pigments and base, and this may pass a quick inspection.

National University of Singapore
National University of Singapore
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