Printer tracking dots

Rarity: Common

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At a glance

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Work

Domain

Arts and letters

Knowledge cost

3

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Nobody has pulled it yet.

What Wikipedia says

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.

Excerpt from the Wikipedia article “Printer tracking dots”, under the CC BY-SA 4.0 license. Read the article on Wikipedia