A security apparatus, method and system for rendering a security mark, can involve providing a security mark with a metameric pair of infrared inks. A spectral reflectance of two metameric inks among the metameric pair of inks differs for CMYK for K in infrared. A first metameric ink among the metameric pair of infrared inks can be configured to include more K than a second metameric ink among the metameric pair of infrared inks, wherein when a document containing the security mark is scanned, and the number of K pixels in the first metameric ink is filtered to destroy the security mark when viewed through an infrared camera.

Methods and systems for creating a gloss effect, can involve adjusting a color selected with a first RGB color value for a first pattern ink among a group of pattern inks to appear lighter and selecting a common geometric pattern for the group of pattern inks including the first pattern ink and a second pattern ink. A feature can be written with an object with a second RGB color value and a geometric pattern can be written opaquely on top of the selected common geometric pattern. The feature can be erased within the object with a third RGB color value. The feature can be then written with a fourth RGB color value. The geometric pattern can be then written opaquely on top of the feature in the color adjusted selected for the first pattern ink to create a gloss effect with the geometric pattern opaquely on top of the feature in the color adjusted selected for the first pattern ink which displays the feature.