In the mid-1980s, Xerox pioneered an encoding mechanism for a unique number represented by tiny dots spread over the entire print area, and first deployed this scheme in its … See more

Both journalists and security experts have suggested that The Intercept's handling of the leaks by whistleblower Reality Winner, which included … See more

Other methods of identification are not as easily recognizable as yellow dots. For example, a modulation of laser intensity and a variation of shades of grey in texts are feasible. As of 2006 , it was unknown whether manufacturers were also using these techniques. See more

The pattern consists of a dot-matrix spread of yellow dots, which can barely be seen with the naked eye. The dots have a diameter of a tenth of a millimeter (0.004") and a spacing of about one millimeter (0.039″). Their arrangement encodes the serial number of … See more

The dots can be made visible by printing or copying a page and subsequently scanning a small section with a high-resolution scanner. The yellow color channel can then be … See more

Copies or printouts of documents with confidential personal information, for example health care information, account statements, tax … See more

• EURion constellation, a dot matrix spread over a bank note, which stops some printers and color copiers from processing
• Taggant § Explosive taggants
• Typewriter § Forensic examination See more