Poka Yoke (error-proofing)

Poka Yoke is a Japanese manufacturing strategy of error-proofing through controls to prevent, detect and abate errors. Used with necessary but error-prone inspections, Poka Yoke can limit the creation or processing of defected products, compounding the value wasted.

Poka Yoke mechanisms may either actively prevent defects or signal an alarm when a defect is detected. Think of the spell-check function in word processing programs.