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 ...

A novel invisible ink tattoo technique may improve long-term quality of life and emotional well-being for people with cancer who undergo radiation therapy, according to study results. Radiation setup ...

Add Yahoo as a preferred source to see more of our stories on Google. Need some gifts for your kids, grandkids, nieces and nephews? More specifically, gifts they won't toss aside as soon as they open ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

My finger hovers over an iMessage obscured by a haze of dancing white dots. Before I tap to dissolve the sparkling pixels and reveal the contents of the message, I know it's going to be juicy, or at ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

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 ...

Invisible Ink has been around since the first spies. For Halloween, we’re going to make it in a slightly different way… BLOOD RED. Participants will “paint” their picture with invisible ink… but when ...

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 ...