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A behavior-shaping constraint, also sometimes referred to as a forcing function, or poka-yoke, is a technique used in error-tolerant design to prevent the user from making common errors or mistakes. One example is the reverse lockout on the transmission of a moving automobile.

External links

• A paper that includes the concept
• Architectures of Control in Design, a site looking at constraints in the design of products, systems and environmentsTemplate:Enwp:Behavior-shaping constraint