Wizard of Oz prototyping. Wizard of Oz prototyping (WOZ prototyping) is a design methodology used in rapid product development to improve the user experience (UX). WOZ prototyping requires developers to create a rudimentary model of the completed product.

  • Simulated control and response by a researcher behind the scenes, while a participant engages with a system
  • Participants are led to believe they are interacting with a working prototype, but in reality, a researcher is acting as a proxy from behind the scenes.
  • The “wizard” can intercept and shape the interaction between the participant and the system.
  • The goal is to allow a user to realistically experience a product or interface before prototypes are built.
  • For an appropriate, timely system response, the researcher must observe participant activity: for example, through video or screen-sharing software.
  • The believability of the simulations hinge on the wizard’s consistency with respect to timing, patterns, and system logic.
  • This is useful when designing applications that do not already have established design patterns (for example, augmented reality or ubiquitous computing).

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