Later life has become one of the most prominent topics for the design and development of digital technologies, resulting in the creation of a large body of prototypes and products (gerontechnologies). However, the majority of these efforts suffer from a lack of empirical grounding of their imaginaries of ageing and later life while also failing to involve older adults in design processes in meaningful ways. This chapter reviews how age and ageing can be configured across different instances of the development and deployment of digital technologies. We understand such design processes as configuration practices that co-construct older users and later life. By using the concept of re-con-figuration, we critically reflect about conceptual, ethical and pragmatic challenges of involving older people in design processes.