Scientists have created a new form of invisible ink, but it has one big hitch: it might be toxic. Invisible inks, or “smart inks,” can be used for everything from preventing counterfeit money ...

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 ...

Chinese scientists have created an invisible ink which would be ideal for keeping precious information out of unwanted hands. The water-based system can be printed on in seconds.

Like disappearing ink, but cooler: Laser-powered invisible images demonstrated The image is only revealed if the right color laser is shone on surface. Chris Lee – Apr 21, 2017 7:00 ...

Forget invisible ink, how about super-secret ink? Scientists have successfully hidden a 256-bit cipher key within molecules of ink on a handwritten letter.

The agency releases six World War I-era documents, most of which deal with invisible ink. Accessibility statement Skip to main content. Democracy Dies in Darkness. Democracy Dies in Darkness.

Scientists just showed that they could print an invisible QR code made of a high-tech ink containing fluorescent nanoparticles, layering it on in a thin, 50 micron layer on a sheet of paper. The ...