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Alternative prototypes

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30-40 minutes

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  • Paper

  • Coloured pens

  • Scissors/glue

  • Any props that might be needed for the service concepts, ideas and prototypes

What is this tool and what is its purpose and benefit?


The rapid experiments tool is used to generate and iterate quick and easy prototypes to test with the target audience. The aim is to get early feedback on the concepts and prototypes to find out if a potential service or its features work, or which alternative version of the service works the best, before refining them into final concepts and prototypes. Rapid experiments help to find direction for the final solution quickly, are easy to implement, do not need a lot of time to make, and do not require additional training or any extra costs.

Steps how to use this tool in practice

The same steps apply when working individually, in pairs or in a group.


First think about what the service requirements are and what you would like to achieve with your rapid experiments.


Select the participants to try out rapid prototypes. Ideally these should match with the profile of your target customers.


Develop your rapid experiments. The prototypes should be easy to make and easy to adapt in the course of the testing, if necessary. Iterate and create new experiments as many times as needed.


Demonstrate your rapid prototypes and have your target audience try them out.  Ask them for feedback. Analyse the results, and if possible, introduce changes to the prototypes that you can test again. Incorporating changes on the go help you test a number of different features.

Other tools of this phase

Transferring concepts into easy-to-understand visual form.

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Prototyping different services through roleplay.


A detailed evaluation of the service and its aspects.

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Quick, simple, cheap and low-technology prototypes.

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A visual tool for sorting and selecting ideas.

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Voting and selecting ideas with stickers.

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