> For the complete documentation index, see [llms.txt](https://api2-ekycapis.innov8tif.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api2-ekycapis.innov8tif.com/okaydoc/okaydoc-all/supported-documents/singapore/sg-nric-pr-front/additional-information.md).

# 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)