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 ...

Advancements in artificial intelligence (AI), especially large language models (LLMs) like ChatGPT and open-source counterparts, are reshaping how people communicate daily. These AI systems generate ...

ALBUQUERQUE, N.M. (WHAT THE TECH?) — Like cyber criminals with AI, parents might be interested to know that people have been using invisible commands for years on apps we all use. When some of us were ...

SHREVEPORT, La. — When we were kids, “invisible ink” meant lemon juice on notebook paper — write the message, and to see it someone would have to hold it up to the light for the words to appear.