How to design error-proofing (poka-yoke) tooling for automotive assembly?

Automotive assembly error-proofing shouldn't just focus on 'telling employees not to make mistakes.' Many errors on the shop floor aren't due to a lack of attention, but rather similar-looking parts, tight cycle times, left/right-hand parts being easily swapped, or poor lighting at the workstation. Relying on memory will inevitably lead to errors sooner or later. Truly effective error-proofing…