What does OVI stand for?

What does OVI stand for?

• A. Onyx Visible Ink
• B. Optical Value Indicators
• C. Optically Variable Ink
• D. Optically Visible Ink

Answer: (C)

Optically Variable Ink is a security feature where the ink changes color as the viewing angle changes. This angle-dependent color shift comes from special pigments or microstructures, making it easy to verify by tilting the note or document. It’s commonly used on currency and other secure documents to deter counterfeiting. The other options don’t describe this color-changing, angle-dependent effect, and they don’t match the established term for this type of security ink.

Optically Variable Ink is a security feature where the ink changes color as the viewing angle changes. This angle-dependent color shift comes from special pigments or microstructures, making it easy to verify by tilting the note or document. It’s commonly used on currency and other secure documents to deter counterfeiting. The other options don’t describe this color-changing, angle-dependent effect, and they don’t match the established term for this type of security ink.