Mobile text entry has become an integral part of our daily life. We regularly input text on smartphones, laptops, desktops and increasingly on smartwatches, VR systems, interactive tabletops/walls, and kiosks. This text entry is done in all social settings, from solo individuals writing private notes, through social networking in bars with friends, to jointly writing on collaborative devices in public spaces. Traditional tap-based input is increasingly being replaced with or supplemented by voice input or multimodal control. With the ubiquity of text entry, it is becoming increasingly important to consider socio-technical systems perspectives in the design, development, and evaluation of new techniques. The purpose of this one-day workshop is to share and encourage research exploring various socio-technical aspects of text entry, including social and cultural impacts, developing socially and culturally acceptable techniques, and techniques to support all users of varying ages, social and technical backgrounds, language, and physical abilities.