Researchers have developed a rewriteable paper coating that can encrypt secret information with relatively low-tech invisible ink -- water. A message printed out by a water-jet printer on a ...

(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 ...

Beth Harris, Raleigh mom and science educator, returns today with a really fun and easy experiment for kids to try - invisible ink! All you need is a piece of paper, milk with some amount of fat in it ...

A Japanese student received top marks after handing in a blank piece of paper for an assignment when her professor realized the essay had been written in invisible ink. Eimi Haga, a first year student ...

The following is an except from Prisoners, Lovers & Spies: The Story of Invisible Ink from Herodotus to al-Qaeda, by Kristie Macrakis, One of my favorite invisible-ink stories, that didn’t make the ...

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 to ...

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 ...

Invisible inks based on “smart” fluorescent materials have been shining brightly (if only you could see them) in the data-encryption/decryption arena lately ...