Advances in technology are playing an increasingly outsized role in support of the planning, design, targeting, implementation, monitoring, and security of humanitarian operations. This playbook is a tool for anyone interested in ensuring that humanitarian technology is rooted in local engagement and support for local innovation: frontline humanitarian workers, humanitarian organisations, technologists, donors, or community leaders. It is designed as a series of open-ended questions intended to uncover assumptions and test the local relevance, engagement, and localisation of technology design efforts and technology deployment to support humanitarian action.