Decoding Printer Tracking Dots

10/19/2005
An image of one repetion of the dot grid from the Xerox DocuColor 12 page, magnified 10x and photographed by the QX5 microscope under illumination from a Photon blue LED flashlight

An image of one repetion of the dot grid from the Xerox DocuColor 12 page, magnified 10x and photographed by the QX5 microscope under illumination from a Photon blue LED flashlight

The dot grid under 60x magnification

The dot grid under 60x magnification

Detail map of San Francisco, California, United States Overview map of San Francisco, California, United States

A: San Francisco, California, United States

The Electronic Frontier Foundation logo

The Electronic Frontier Foundation logo

Timeline Themes

An image of one repetion of the dot grid from the Xerox DocuColor 12 page, magnified 10x and photographed by the QX5 microscope under illumination from a Photon blue LED flashlight

An image of one repetion of the dot grid from the Xerox DocuColor 12 page, magnified 10x and photographed by the QX5 microscope under illumination from a Photon blue LED flashlight

The dot grid under 60x magnification

The dot grid under 60x magnification