Discussion: Addressing More Hologram Authenticity and "Color-Shift Ink" Questions
Following up on our earlier discussions about holograms, I wanted to focus on one of the most advanced security features: OVI (Optically Variable Ink). This is the ink that changes color as you tilt the card. How do vendors replicate this? And how can we tell if they’ve used real color-shifting ink or just a simple holographic sticker? I wanted to start a discussion about identifying high-end OVI replication. How do we see the difference?
First off, OVI is NOT a hologram. A hologram reflects light in a rainbow pattern, whereas OVI actually changes from one specific solid color to another (e.g., from gold to green or green to blue). A high-quality vendor will use actual optically variable inks that have been matched to the official specifications. Let’s talk about the details. How do we judge the quality?
OVI Accuracy Checklist
- Color Transition: Slowly rotate the card. Does the ink change clearly from one solid color to the next? The transition should be smooth and the colors should be distinct.
- Raised Texture: In many jurisdictions, the OVI feature is slightly raised from the surface of the card. Use your finger to feel for this texture—it’s a major indicator of a pro-level card.
- Opacity: The color-shifting ink should be completely opaque. You should not be able to see any of the background patterns through the ink layer.
I’ve noticed that some of the newer US state IDs have incredibly vibrant OVI features that are very hard to replicate correctly. Has anyone recently compared a novelty version to an original specifically looking for these color-shift effects? Which vendors are currently leading the pack in OVI technology? Let’s share our "tilt" findings!
