The spread of information and communication technologies (ICTs) in all aspects of our lives increases the range and scale of potential issues with social acceptance. In the HCI community there is a growing interest and recognition of social acceptability issues with emerging technologies and novel interaction paradigms. This workshop builds on the success of the CHI 2018 workshop on social acceptability by bringing together academics and practitioners to discuss what social acceptance and acceptability mean in the context of various emerging technologies and modern human-computer interaction. We aim to bring the concept of social acceptability in line with the current technology landscape, as well as to identify relevant research steps for making it more useful, actionable and researchable with well-operationalized metrics. The intended outcome of the workshop is two-fold: first, we will continue the efforts to provide an actionable conceptualization of social acceptability in HCI. Second, we will start a collection of best practices and practical examples to be brought together as a continuously updated “case book” of social acceptability in HCI.