In the emergency scenario generated by COVID-19 pandemic, the development of fast solutions to reduce the contagious curve can mean saving lives. Democratic access to prevention methods is essential, especially in places with high exposure to contamination and whose activities have not been interrupted, such as public transportation. This work presents the development of a hand sanitizer dispenser for public transportation and other possible locations in the urban environment, designed during an online marathon. The focus is on the development of the Design Sprint method and its adaptations to fit the remote work and other constraints due social distance. The final product was designed to be produced by 3D printing and open design, to fast distribution and replication. It fits in the bus's handrails, with some positioning possibilities and the use of PET bottles as alcohol containers. As a result, the paper highlights the particularities of agile methods for the design process at a distance and demonstrates that the process used allows for quickly responding to solutions for emerging needs.