Thermochromic and luminescent inks as well as microtexts represent only a selection from our portfolio of semi-covert security features.
Thermochromic inks change from colored to transparent when a defined temperature range is exceeded. The effect is reversible. For example, a color print becomes transparent when rubbed, or invisible lettering only appears under cold conditions. Our latest generation thermochromic inks are BPA-free!
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Luminescent inks are transparent and only become visible and glow under UV light. Luminescent inks are available in different colors.
Microtexts can hardly be seen with the naked eye. Microtexts are easy to communicate and easy to check using a magnifying glass.