INVISIBLEINK

Invisible ink

Invisible ink, also known as security ink, is a substance used for writing, which is invisible either on application or soon thereafter, and which later on can be made visible by some means. Invisible ink is one form of steganography, and it has been used in espionage. Other uses include anti-counterfeiting, property marking, hand stamping for readmission, fun children's games, and marking for the purpose of identification in manufacturing.

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invisible ink

Noun

  1. An ink, invisible on application or soon thereafter, that can later be rendered visible by some process, such as exposing it to heat.


The above text is a snippet from Wiktionary: invisible ink
and as such is available under the Creative Commons Attribution/Share-Alike License.

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