Optically Variable Ink (OVI) is described as?

Optically Variable Ink (OVI) is described as?

• A. Ink that disappears under ultraviolet light
• B. Ink that is permanent and gold in color
• C. Ink that appears like glitter and/or tends to change color or vary optically as the angle of lighting changes
• D. Ink that remains constant under all lighting

Answer: (C)

Optically Variable Ink is designed to change how it looks when you view it from different angles. It often looks glittery and can shift color or appear to vary optically as the angle of lighting changes. That angle-dependent color change is what makes it a security feature—harder to replicate than inks that stay the same color under all lighting or those that don’t exhibit any color shift. In contrast, inks that disappear under UV light or stay constant in color don’t capture the distinctive, angle-sensitive effect of Optically Variable Ink.

Optically Variable Ink is designed to change how it looks when you view it from different angles. It often looks glittery and can shift color or appear to vary optically as the angle of lighting changes. That angle-dependent color change is what makes it a security feature—harder to replicate than inks that stay the same color under all lighting or those that don’t exhibit any color shift. In contrast, inks that disappear under UV light or stay constant in color don’t capture the distinctive, angle-sensitive effect of Optically Variable Ink.