‘Citizen sensing’, framed as grassroots-driven monitoring initiatives based on sensor technology, is increasingly entering the debate on environmental risk governance. Although through a possible initial conflict, citizen sensing may ultimately have the potential to contribute to institutional risk governance. Building on previous empirical research based on a combination ofmethods, including ethnographical research, descriptive analysis and fuzzy-set Qualitative Comparative Analysis, Berti Suman designs an accessible ‘toolbox’ for interested communities, policy-makers and researchers that wish to shape citizen sensing initiatives in a way to contribute to risk governance.