Numerous brands of color laser printers leave coded metadata in barely perceptible yellow dots that can be used to trace a printed document to its source, a feature originally intended as a ...

Brahm’s Yellow Dots, a blog dating from 2008, chronicles the efforts of Brahm Neufeld, a student at the University of Saskatchewan in Canada, to communicate with his printer’s vendor, Lexmark ...

On a regular piece of white printer paper, the faint yellow dots are almost impossible to see, even under magnification. However, when the page is illuminated by a blue LED flashlight, the dots ...

Others have told resellers that they would buy the first printer that included a guarantee that it did not include such tracking devices. So far, Hill has heard of no one who has been able to hack ...

That code is an almost-invisible grid of dots that some color printers ink into every document they print. The complaint also details how agents say they tracked the leak back to Winner.

We've known for years that color laser printers can embed a series of tiny yellow dots on pages they print. The dots—almost invisible under normal circumstances—can be used to determine which ...