Poka yoke (pronounced POH KA YOKE) is a mistake proofing approach to eliminating errors or preventing errors that was developed by the Japanese engineer Shigeo Shingo in the 1960s. The phrase “poka yoke” is derived from the Japanese word that means “to avoid errors”. Poka yoke makes use of simple, but effective tools and signals to prevent errors from occurring.

Use: A simple example of poka yoke is taping your car keys to something that you want to take to work. It is simple. It is effective. That’s all that is needed. Don’t spend money on capital if a simple innovation can be effective.

Six Sigma Terminology

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