A few decades ago, a transfer of ethnographic approaches to design and design research started to appear. It generally aimed at helping designers to understand people, their culture, and their usage of technologies in order to design better products. Over the years, designers in their work have repurposed a large array of theoretical concepts, methods and tricks. This chapter reflects on this evolution, and describes the notion of “design ethnography” in order to highlight the specificity of this approach. A project that speculates on the future of gestural interactions with technologies exemplifies this approach.