Summary
Digitalisation and the Internet of Things (IoT) help city councils improve services, in-crease productivity and reduce costs. City‐scale monitoring of traffic and pollution en-ables the development of insights into low‐air quality areas and the introduction ofimprovements. IoT provides a platform for the intelligent interconnection of everydayobjects and has become an integral part of a citizen's life. Anyone can monitor from theirfitness to the air quality of their immediate environment using everyday technologies.With caveats around privacy and accuracy, such data could even complement thosecollected by authorities at city‐scale, for validating or improving policies. The authorsexplore the hierarchies of urban sensing from citizen‐to city‐scale, how sensing atdifferent levels may be interlinked, and the challenges of managing the urban IoT. Theauthors provide examples from the UK, map the data generation processes across levelsof urban hierarchies and discuss the role of emerging sociotechnical urban sensing in-frastructures, that is, independent, open, and transparent capabilities that facilitatestakeholder engagement and collection and curation of grassroots data. The authorsdiscuss how such capabilities can become a conduit for the alignment of community‐ andcity‐level action via an example of tracking the use of shared electric bicycles in Bris-tol, UK.