Poka-Yoke
Mistake-Proofing · Inadvertent Error Prevention
A Japanese term to mean a mechanism in a process that helps an equipment operator avoid (yokeru) mistakes (poka), thereby eliminating product defects by preventing, correcting, or drawing attention to human errors as they occur.
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Origin
The concept was formalized, and the term adopted, by Shigeo Shingo as part of the Toyota Production System. It was originally described as baka-yoke, but as this means "fool-proofing" (or "idiot-proofing") the name was changed to the milder poka-yoke.