Lean Six Sigma Mistake Proofing (Poka-Yoke) - GoLeanSixSigma.com

1. Mistake Proofing:
Poka-Yoke
Better Understand Mistake Proofing

2. Mistake-Proofing = Poka-Yoke
• Poka-Yoke: Reducing the likelihood of making an error
• “Hard” Mistake-Proofing: Design processes and
tasks for error-free execution
• “Soft” Mistake-Proofing: Create alarm signals to
catch Defects as they occur and warn people

3. Examples of Mistake-Proofing
• Hard:
• Online applications that do not allow you to
proceed without required information
• Soft:
• When the car makes a sound when you open the
door and the headlights are still on

4. Start Improving Today.
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