A transparent coating that becomes visible under ultraviolet light is designed for application on various surfaces. It remains virtually invisible in normal lighting conditions, but emits a glow when exposed to UV or “black light.” An example of its use can be found in security applications, where identifying marks are needed only under specific conditions.
Its utility arises from its ability to provide covert marking and identification. Throughout its development, such a coating has found utility in anti-counterfeiting measures, special effects in entertainment, and scientific research where visual tracking is needed without disrupting the ambient environment. The initial adoption of these coatings occurred alongside the rise of fluorescent lighting and the need for invisible marking methods.
