# Additional Information

### Illumination Detection

**Multiple Laser Image (MLI):** A laser-generated optically variable image, composed of horizontal lines.

![](/files/5JJOnL4LjuiQdJADmSAv)

![](/files/TAarKCZtB3BZjl1yS9Kh)

### **Optically Variable Ink Detection**

**Optically Variable Ink (OVI):** Ink containing optically variable pigments that generate a noticeable colour change (shift), depending on the angle of view and/or incidence of light.

![](/files/LV7tyZL0Q81TLvfYtNjm)

![](/files/SYYZwu8g9lJVINHjUx9x)


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