Prototype is the smaller scale, still of bugs and haven’t properly functioned yet. It is meant for the user to interact with the envisioned product, gain experience in realistic setting and explore imagined functions. It is a helpful aid to communicate with team members. There are two types of prototyping, low-fidelity and high-fidelity.
Low fidelity prototype is the one that does not look much like the final product. It uses material that are very different from the intended final version such as paper and cardboard. It tends to be simple, cheap and quick to produce. It is important during conceptual design but not actually will be included in the final design.
High fidelity prototype on the other hand uses material that you would expect to see in the final product. It takes longer time to be build and a lot of difficulties would ensue as a software prototype can set higher expectations. However, it is useful for selling ideas and for testing out technical issues.
As a conclusion, prototype is definitely important in designing as it helps the designer to improve the product before it was officially released.
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