Post by Toyota North America

Next in our Toyota Production System Series: Pokayoke Pokayoke refers to a simple, highly reliable device or method that helps prevent mistakes or detect them immediately, so defects do not move forward. The goal is to design processes so that only the correct action can occur, or the process stops when something is off. While the concept of fail‑safe design existed for many years, it was formalized through Shigeo Shingo’s work at Toyota. Poka‑yoke can be as straightforward as a fixture that only allows parts to be assembled one way, or a sensor that prevents a machine from running under abnormal conditions. Today, it broadly includes any approach that helps prevent errors or identify abnormal conditions before or after processing. By building these safeguards into the process, teams can improve quality at the source, reduce rework and waste, and maintain smooth, reliable flow. Food for thought: Where in your workflow could you design a simple fail‑safe that helps prevent errors instead of catching them later? 🤔