https://6sigma.com/everyday-poka-yoke-door-knob-safety/ Six Sigma Certification and Training Fri, 28 Feb 2025 07:15:02 +0000 hourly 1 https://6sigma.com/everyday-poka-yoke-door-knob-safety/#comment-25323 Sun, 06 Jun 2010 17:24:26 +0000 https://opexlearning.com/resources/?p=2512#comment-25323 Ha – this makes me laugh because I tried the same and similar devices for my youngest, who was 2 when we installed them. It took him about 5 minutes to figure it out.

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