---
title: Everything You Ever Printed Had a Secret Code On It — HIGH T3CH
url: https://hight3ch.com/everything-you-ever-printed-had-a-secret-code-on-it/
date: 2015-12-01
---

# Everything You Ever Printed Had a Secret Code On It

This is why you can’t print black and white when low on yellow ink. Each laser printer ever produced embeds a secret code on each printed page. It does that so the government can trace back the printer if they find someone printing counterfeit money with it.