Definition
Poka-Yoke is a method of designing processes, equipment or workstations so that errors are prevented or detected immediately.
Human Explanation
Poka-Yoke designs work so that an incorrect action is impossible or is noticed immediately.
Why it Matters
Preventing errors improves quality and safety and reduces the cost of rework, complaints and production losses.
Conceptual Boundary
Poka-Yoke is not about adding more quality inspection. Its purpose is to prevent errors from occurring, not to find them later.
Practical Perspective
The best solution makes an incorrect action impossible rather than only easier to notice.