Wizard-of-Oz Prototype

Technique

A prototype technique where a person secretly or openly controls part of the system to simulate behavior that is not built yet.

Description

A Wizard-of-Oz prototype lets the team test an experience before the full system exists. A human operator may trigger sounds, responses, dialogue, lighting, character behavior, or interface changes. In immersive work, this can reveal whether the interaction idea feels meaningful before technical development becomes expensive.

Typical Use

Used during rapid prototyping, experience prototyping, interaction design, onboarding design, playtesting, and technical planning.

Scope Note

This technique may include operator scripts, trigger notes, timing rules, participant prompts, observation notes, hidden controls, and decisions about what should be built later.

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