bn:03500691n
Noun Concept
Categories: Steganography, Espionage
EN
invisible ink  disappearing ink  Infrared dye  invisible writing  Lee magic pen
EN
Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means, such as heat or ultraviolet light. Wikipedia
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EN
Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by some means, such as heat or ultraviolet light. Wikipedia
Substance used for writing which is invisible and can later be made visible Wikidata
An ink, invisible on application or soon thereafter, that can later be rendered visible by some process, such as exposing it to heat. Wiktionary
Invisible ink that can later be rendered visible. Wiktionary (translation)