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invisible ink |
Also found in: Wikipedia | 0.04 sec. |
invisible ink n
(Chemistry) a liquid used for writing that does not become visible until it has been treated with chemicals, heat, ultraviolet light, etc. Translations How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In George Washington's day, spies relied on secret signals and invisible inks that would probably amuse 21st century children. Lazzouni's diverse achievements include patents in synthesizing infrared material, and using steganography and invisible inks to encode spatial information for document security. It is the only solution that can completely authenticate a document, in less than four seconds, by reading and decoding the Machine Readable Zone (MRZ), identifying the laminate type, confirming the national security logo, verifying invisible inks and tags, and searching for and highlighting tampering. |
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