Have you ever encountered a common printer problem where your printer absolutely insists on having colored ink available, even if you're only printing in black and white? It's not because it's trying ...

Look closely at the image for this story. See those tiny yellow dots, arranged in a faint grid? They’re on every page you’ve ever printed using a color laser printer. And they contain more than most ...

It sounds like a conspiracy theory, but it isn't. The pages coming out of your color printer may contain hidden information that could be used to track you down if you ever cross the U.S. government.

Add Yahoo as a preferred source to see more of our stories on Google. Have you ever encountered a common printer problem where your printer absolutely insists on having colored ink available, even if ...