Light-directed invisible ink unlocks unbreakable anti-forgery protection

Counterfeiting of important documents like passports poses a serious and growing global security threat. Despite the use of various anti-counterfeiting technologies such as specialized inks, holograms and watermarks, the increasing sophistication of counterfeiters means that forgery remains an ongoing risk. A key vulnerability of current methods is that security features like inks are typically printed on document surfaces, making them more accessible for tampering or chemical analysis by fraudsters attempting to decipher their composition.