Defensive design

Defensive design is the practice of planning for contingencies in the design stage of a project or undertaking. Essentially, it is the practice of anticipating all possible ways that an end-user could misuse a device, and designing the device so as to make such misuse impossible, or to minimize the negative consequences. For example, if it is important that a plug be inserted into a socket in a particular orientation, the socket and plug should be designed so that it is physically impossible to insert the plug incorrectly. Power sockets are often keyed in such a manner, to prevent the transposition of live and neutral.

Defensive design in software engineering is called defensive programming. Murphy's law is a well-known statement of the need for defensive design.

Examples

Many electrical connectors apply this principle by being asymmetric.

Communication design	Advertising Book design Corporate design Exhibit design Film title design Graphic design Environmental Motion Postage stamp design Print design Illustration Information design Instructional design News design Photography Retail design Signage / Traffic sign design Typography / Type design Video design Visual merchandising

Environmental design	Architecture Architectural lighting design Building design Passive solar Ecological design Environmental impact design Garden design Computer-aided Healthy community design Hotel design Interior architecture Interior design EID Keyline design Landscape architecture Sustainable Landscape design Spatial design Transition design Urban design

Industrial design	Automotive design Automotive suspension design CMF design Corrugated box design Electric guitar design Furniture design Sustainable Hardware interface design Motorcycle design Packaging and labeling Photographic lens design Product design Production design Sensory design Service design

Interaction design	Experience design EED Game design Level design Video game design Hardware interface design Icon design Immersive design Information design Sonic interaction design User experience design User interface design Web design

Other applied arts	Public art design Ceramic / glass design Fashion design Costume design Jewelry design Floral design Game art design Property design Scenic design Sound design Stage/set lighting design Textile design

Other design & engineering	Algorithm design Boiler design Conceptual design Database design Drug design Electrical system design Experimental design Filter design Job design Integrated circuit design Circuit design Physical design Power network design Nuclear weapon design Nucleic acid design Organization design Process design Processor design Protein design Research design Social design Software design Spacecraft design Strategic design Systems design

Approaches

Tools
Intellectual property
Organizations
Awards

Tools	AAD Architectural model Blueprint Comprehensive layout CAD CAID Virtual home design software CAutoD Design quality indicator Electronic design automation Flowchart Mockup Product design specification Prototype Sketch Storyboard Technical drawing Web design program Website wireframe

Intellectual property	Community design Design around Design patent Geschmacksmuster Industrial design rights European Union

Organizations	AIGA Chartered Society of Designers Design and Industries Association Design Council International Forum Design The Design Society Design Research Society

Awards	European Design Award German Design Award Good Design Award (Chicago) Good Design Award (Japan) Graphex IF product design award James Dyson Award Prince Philip Designers Prize

Defensive design

Examples

See also