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Tag: OVD

Innovation drives hologram document protection

It might be more than 65 years since the invention of the hologram but today the technology remains a potent weapon in the ongoing...

Optical effect of novel structural colour OVD

Optically variable devices (OVDs) display special visual effects such as colour-shifting and image-shifting representation. OVDs which are composed of microscopic structures are quite different...

Innovations in Optically Variable Devices

The increasing need for security is driving global adoption of advanced electronic ID documents as a primary means of confirming identity and right of...

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