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 ...

Tech The sneaky invisible texting trick kids love using to fool their parents revealed By Ben Cost Published March 19, 2024, 10:00 a.m. ET ...

The “anti-groping” stamps, manufactured by stamp-maker Shachihata Inc., allow victims of harassment to mark their assailants with invisible ink, and also provide a deterrent to would-be attackers.

The salts can be flushed out with solvents such as methanol to render the ink invisible again. Logos and illustrations printed with this ink could be made visible and invisible 20 times.

The legal battle over secret ink began in 1998, when the organization asked the National Archives to identify the oldest classified document in its custody.

In this challenge, I used a Smiggle Spy Pen to draw a full doodle using invisible ink that only appears under UV light! 🔦🖊️ Drawing without seeing the full lines in real time was tricky—but the ...

Perfect for the wannabe spy Invisible ink is back, and it’s better at hiding than ever. A new invisible ink that you can print is harder to reveal than most common cyphers. Liang Li at Shanghai ...

In this Summer Science experiment students at Effingham College and Career Academy show us how to create invisible ink using a lemon.

Lorde surprised everyone by debuting two new songs, temporarily called “Silver Moon” and “Invisible Ink,” and their clubby sound and daring lyrics seem to tease the new era could call back ...

A Japanese student aced an assignment on ninja culture by making her own invisible ink from soybeans in a stealthy move that impressed her professor.

Does it count as vandalism? What if it’s funny? By John Hodgman Jim writes: We recently remodeled our kitchen, and my 10-year-old son wrote, “Are you eating cereal?” on the new countertop in ...

Like disappearing ink, but cooler: Laser-powered invisible images demonstrated The image is only revealed if the right color laser is shone on surface.