The relationship between technological artefacts and the social settings of their design, production and use has received considerable attention in recent years, particularly through the emergence of the sociomateriality literature. This paper reviews extant conceptualizations and discusses the contribution of a Heideggerian perspective to the study of sociomaterial practices. Drawing on insights from Heidegger's existential spatiality', an alternative view of spatiality is presented, namely, spatiality as care rather than physical extendedness. Then, the sensitizing concepts of theoretical significance' and practical significance' of technological artefacts are introduced grounded in these insights. Finally, implications of spatiality as care for the emergence and change of sociomaterial practices are discussed.