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This convenient pen can be used to invisibly mark most porous surfaces such as paper, cardboard, wood, documents and paper currency. Fluorescent markings become visible when exposed to long or short wave ultraviolet light.
Notice: This item can be purchased by law enforcement agencies or private investigators only.
Multiple Options Available
Our crayons are a popular item to invisibly mark articles such as currency, tires, paper, wood, metal, glass, etc., for identification and theft detection purposes. They are practically invisible on...
Multiple Options Available
Our Invisible Inks fluoresce a brilliant blue or green when exposed to a long wave ultraviolet (UV) light source. This ink is nontransferable and will not irritate the subject’s skin. The ink can be...
Multiple Options Available
Our Invisible Thief Detection Spray, a high quality emulsion of our Invisible Thief Detection Powder and a liquid agent, is specially formulated for easy application on any surface background,...
Multiple Options Available
Our Master Invisible Thief Detection Kit contains a wide variety of invisible detection materials normally used by criminal investigators. Your choice of two long wave UV lamps is included, along...
TDI-NG-2
Our nontoxic Thief Detection Powders are usually applied to articles subject to theft or tampering such as currency, paper money, alarm boxes, or cash drawers. Upon direct contact with the article,...