The new mouveGSI security ink from Gleitmann Security Inks can be easily checked under a UV device. Due to a color transition and the green afterglow when the light source is switched off, a "traffic light effect" is created.
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Confidential documents or security papers normally need a special, and mostly expensive, technique in order to ensure authenticity and safety. Still might change in the future with the invention of Ajay Nahata, professor of electrical and computer engineering from the University of Utah and his team. The engineers developed a method, which uses standard inkjet printers and readily available ink to print hidden images that are visible only when using a specific illumination.
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