A vision prototype, sometimes called a concept video or experience prototype, is a high-fidelity communication artefact that demonstrates what a future product or service could feel like, even before the technology to build it exists. It is not a functional prototype: it is a carefully produced fiction that communicates a design vision with enough realism to generate meaningful stakeholder and user reactions. Vision prototypes are particularly powerful for securing organisational commitment to a design direction that is too ambitious to demonstrate through conventional prototyping.