The holographic surface scatters light from the protected surface making it very difficult to read the underlying data (PIN) using reflective techniquers. In addition to the holographic surface a series of coatings are applied to enhance the security of the product. These coatings allow for the foil to have a high level of opacity making backlight reading of the protected data very difficult.

High opacity scratch-off foils for high demanding applications present the highest opacity standard and resists almost all attempts to attack. In addition to the standard dense black coating, the high opacity scratch-off foils include an extra covert layer. This makes it a suitable solution for high demanding applications.