What is the Auto Quality Matrix?

I learned about the Auto Quality Matrix from our friends in Kaizen Institute Europe. As any lean tool, you need to understand it in the context of a system instead of just copy and paste. Here some key points if you are interested on implementing it:

What is it?
A visual display of where the defect are created and where they are detected.

Why to use it?
It is part of a quality management system to quickly identify the source and prevent defects from moving downstream.

How to use it?

Here is an example: