Who invented the Poka-yoke technique?

The Poka-yoke technique, which translates to "mistake-proofing," was developed by Shigeo Shingo as part of the Toyota Production System. This approach aims to eliminate defects by preventing errors before they occur, making processes more efficient and reliable. Shingo's focus was on creating systems that allowed operators to avoid mistakes through design and operational practices.

In practice, Poka-yoke mechanisms are implemented with simple solutions, such as visual cues or physical constraints, to guide workers and ensure that tasks are performed correctly. This method emphasizes the importance of quality at the source, which aligns with the principles of lean manufacturing by reducing waste and improving process flow.

Understanding the origins and rationale behind Poka-yoke is crucial for anyone studying Six Sigma as it highlights the value of proactive quality assurance in achieving operational excellence.