The old “Yes & Know” invisible ink books have been recently resurrected by a small, Ann Arbor-based company, Tree Town Toys.

Need some gifts for your kids, grandkids, nieces and nephews? More specifically, gifts they won't toss aside as soon as they open them? We've got the goods: Maleden Invisible Ink Pens. These ...

(KERO) — People have seen it in spy movies, secret messages written through invisible ink. As it turns out, the average person may have all the ingredients needed to make their own invisible ink right ...

It’s called invisible text, and it’s one of those digital tricks that’s clever, sneaky, and surprisingly easy. Here’s how it ...

For a long time, seeing those words pop up onscreen was the best indicator of good gossip to come. Close seconds included “OK, so…” for the more demure among us, or a simple teacup emoji for the ...

William Abel, a mail censor at Iowa's State Prison, Fort Madison, using a hot iron to bring out a secret message written in lemon juice on a letter.Three Lions/Getty Images Humans have had a long ...

It’s an act of text-pionage. A concerned parent has issued a warning after she discovered her child sending “concealed” texts to their friends, as detailed in a viral Reddit post. “My child has found ...

EFFINGHAM COUNTY, Ga. (WTOC) - In this Summer Science experiment students at Effingham College and Career Academy show us how to create invisible ink using a lemon. - When the lemon juice is heated a ...

The incurable hotness of French Author Herv Guibert owes nothing to the timely and shattering content of his mind and the publication of a most original work: Written in Invisible Ink. Guibert died of ...

Putting secrets in texts is risky business. An email is almost certainly a no-go, as is a traditional SMS. Encrypted texting, like iMessage, is better, since only your device and the recipient’s can ...