Printer tracking dots
Digital watermark which certain color laser printers and copiers leave on every single printed page, allowing to identify the device with which a document was printed and giving clues to the originator
Nº Q1692554 ★★
Uncommon · History
Printer tracking dots
Digital watermark which certain color laser printers and copiers leave on every single printed page, allowing to identify the device with which a document was printed and giving clues to the originator
Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), are a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the time, the date, and the specific device that was used to print the document. They were developed by Xerox and Canon in the mid-1980s, but awareness of these tracking codes became public only in 2004.
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From Wikipedia
Printer tracking dots, also known as printer steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), are a digital watermark which many color laser printers and photocopiers produce on every printed page that identifies the time, the date, and the specific device that was used to print the document. They were developed by Xerox and Canon in the mid-1980s, but awareness of these tracking codes became public only in 2004.
Text: Wikipédia, CC BY-SA 4.0. · Image: Anton (CC BY-SA 2.5) ·
