I was lazy today. I only took a photo of these prints. (But if I must be honest, I also took three photos with my smartphone when @MarkkuJantunen and I were out with the kids, but those photos were awful.)

In 2005, a research team led by the Electronic Frontier Foundation (EFF) broke the code behind tiny tracking dots that some color laser printers secretly hide in every document. The U.S. Secret Service