With interactive whiteboards, computers, projectors, speakers, spotlights, and physical and virtual props, the University of Lapland's SINCO lab is dedicated to service prototyping. Prototyping isn't just for product design anymore; it works for services too.

Children are mostly neglected as technology end users, even though they have needs and requirements that should be taken into account in the design of new products and services. This paper introduces a process for a designing situation-aware safety service for children with a unique combination of novel participatory tools, a brainstorming workshop, and scenario writing. The design process includes five phases where the service design team, with multi-science expertise, uses the participatory design tools to gather the needs, fears, and hopes from the end users in the very early phases of the design. We report the lessons learned from the usage of the design process by the pupils, their parents and teachers from one primary school in Finland. We used publicity via the news in local and provincial newspapers, radio, and TV to receive feedback and acceptance from the local society. The design process proved to be powerful and it enabled the gathering and receiving of valuable feedback from both end users and the local society.

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