Prototyping

1. Prototyping

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

3. 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.”

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

5. 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.

6. 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.”

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

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

9. 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.

10. 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