sleeperchance

Printers' output includes encoded serial numbers, specifically to make them trackable by law enforcement, which has successfully used them for arrests and convictions. The same is true of photocopiers. This isn't as well known as it should be.

If you have call to disseminate printed materials that might generate unwanted interest, pay cash for a used printer.

Search terms: "machine identification codes," "printer tracking dots," "Reality Winner."