With 100% accuracy, the AI model read the regular ink symbols as "STOP," but when a UV light was shown on the writing, the invisible ink illustrated the desired message "BEGIN." Because these ...

Invisible ink can hide classified economic ... Jie Xu and colleagues wanted to train an AI model to identify and decrypt symbols printed in a fluorescent carbon nanoparticle ink, revealing ...

A lead-based ink can be used to print invisible messages that become legible when decrypted with a chemical trigger. Conventional ‘invisible’ inks are not very secure, because they are easily ...

So, Weiwei Zhao, Kang Li, Jie Xu and colleagues wanted to train an AI model to identify and decrypt symbols printed in a fluorescent carbon nanoparticle ink, revealing hidden messages when exposed to ...

So, Weiwei Zhao, Kang Li, Jie Xu and colleagues wanted to train an AI model to identify and decrypt symbols printed in a fluorescent carbon nanoparticle ink, revealing hidden messages when exposed to ...

To design invisible security ink, there are many strategies developed ... When the light is switched on, the character is visible in white background due to the involvement of both fluorescence ...

Researchers at the University of Michigan have developed a kind of electronic “invisible ink” that can help alert ... user can write a message or draw a symbol into the azobenzene using ...

From the piece (do read the full one): For millennia, people have written secret messages in invisible ink, which could only ... digit or symbol. For example, two yellow spots signify a ‘t ...

At The New in Print, a blog devoted to printing and ink technology, they've rounded up a variety of different kinds of invisible inks revealed by special lights, liquids, or other methods.

Steve: That's John Nagy, author of the new book Invisible Ink: Spycraft of the American ... about a captured document written in ciphers and symbols then he talks in more general terms about ...