This book draws on a variety of substantive examples from science, technology, medicine, literature, and popular culture to highlight how a new technoscientifically mediated and modified phase and form of technosleep is now in the making – in the global north at least; and to discuss the consequences for our relationships to sleep, the values we accord sleep and the very nature and normativities of sleep itself. The authors discuss how technosleep, at its simplest denotes the ‘coming together’ or ‘entanglements’ of sleep and technology and sensitizes us to various shifts in sleep–technology relations through culture, time and place. In doing so, it pays close attention to the salience and significance of these trends and transformations to date in everyday/night life, their implications for sleep inequalities and the related issues of sleep and social justice they suggest.