Windows 10 Yellow Dots of Mystery: Is Your Printer Spying on You?


Cooler King
Staff member
Premium Supporter
Imagine that every time you print a document, it automatically includes a secret code that could be used to identify the printer -- and, potentially, the person who used it. Sounds like something from a spy movie, right?

Unfortunately, the scenario isn't fictional. Most color laser printers and color copiers are designed to print invisible tracking codes across every single printed page of their output. These codes reveal which machine produced a document and, in some cases, when the document was printed or copied.


Windows Forum Team
Staff member
Premium Supporter
I wonder why the printer makers said ok to this... o yes ink costs money :rolleyes: