From Needs to Nodes: Prototyping a Firefighter Support System

This paper explores the concept of breadcrumb sensor nodes de- signed to support situational awareness in demanding environ- ments. It presents insights from two workshops conducted with professional firefighters to explore design and technical require- ments for creating such a system. Based on these findings, the paper introduces an initial design prototype and a functional implemen- tation of the sensor node. It discusses core features, anticipated use cases, and implementation challenges, laying the groundwork for further development and field testing.