The wide range of material options and potential applications in a variety of fields, including optoelectronics and electronics, has attracted attention toward two-dimensional transition metal chalcogenides (2D TMCs).
Unbreakable invisible ink encryption could help secure paper records theiet.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from theiet.org Daily Mail and Mail on Sunday newspapers.
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IMAGE: With regular ink, a computer trained with the codebook decodes STOP (top); when a UV light is shown on the paper, the invisible ink is exposed, and the real message. view more
Credit: Adapted from
2021, DOI: 10.1021/acsami.1c01179
Coded messages in invisible ink sound like something only found in espionage books, but in real life, they can have important security purposes. Yet, they can be cracked if their encryption is predictable. Now, researchers reporting in
ACS Applied Materials & Interfaces have printed complexly encoded data with normal ink and a carbon nanoparticle-based invisible ink, requiring both UV light and a computer that has been taught the code to reveal the correct messages.