Printing tracking dots are small secret yellow dots that printers produce on every printed page. These dots provide information about the device used to print the documents
https://en.wikipedia.org/wiki/Printer_tracking_dots
fyi this is finally happening
OpenPrinter
https://www.crowdsupply.com/open-tools/open-printer
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I want one.
no pre-order BS, you got to build it yourself
drop an email for campaign updates, the open source hardware plans will be published
