Prototyping

Introduction Low-fidelity prototyping High-fidelity prototyping Compromises in prototyping From design to implementation

What is Low-fidelity prototyping ? “A low-fidelity prototype is one that does not look very much like the final product” “Low-fidelity prototyping is a cheap way of providing prototypes to use in tests and participatory design sessions.”

Why Use Low-fidelity prototyping ? Useful to produce and modify Cheap to produce and modify Quick to produce and modify

Implementing Low-fidelity prototyping Storyboarding a series of sketches that show how a user might progress through a task using the product under development. Wizard of Oz a method of testing a system that does not exist. It allows designers to test ideas without implementation of a system. Sketches a visual brainstorm that helps you explore all kinds of design ideas.

What is High-fidelity prototyping ? “High-fidelity prototyping uses materials that you would expect in the final product and produces a prototype much more like the final thing.” “High-fidelity prototypes are intended to look and feel much like the final product.”

Why Use High-fidelity prototyping ? Selling ideas For testing out technical issues

Implementing High-fidelity prototyping Common Prototyping tools Flash, Visual Basic and SmallTalk.

Compromising in Prototyping Prototyping naturally involves compromise Trying to create a representation of final product but in a short time. In low-fidelity the product does not function. In high-fidelity problems and errors can be hidden for evaluators “quick and dirty” code.

From Design to Implementation Evolutionary Prototyping –Evolving a prototype into the final product –Requires rigorous testing Throwaway Prototyping –Uses prototype as stepping stones to final design –Thrown away and final product started from scratch