Most social interactions involve interpersonal coordinated movements in real-time and real space, but research on the complex processes determining social behavior are limited by inadequate technology and analytical tools. In EMBRACE we will merge complementary expertise and resources in biomedical engineering, material science, signal processing, neuroscience and social psychology at 3 academic and 3 industrial partners from 3 EU countries to develop: 1) a new mobile and wireless dry electrode EEG system suitable for monitoring brain activity during full body movements; 2) novel body-network sensors and a multimodal alignment system for simultaneously recording neural, physiological and kinematic signals from two interacting subjects; 3) novel analytical solutions for motion artefact removal and multi-level analysis of multimodal data; 4) a new research dyadic paradigm to exploit the technological advances. The novel technologies will address requirements of mobility, high signal quality, high temporal and spatial resolution, stable alignment of multiple signals, wearing comfort and long-term use. The novel analytical methods will permit investigating joint action at the neural, cognitive-behavioural and social levels. Both technologies and methods will be validated in real time and space face-to-face studies to produce prototypes and models optimized for broad application. To achieve these objectives, the EMBRACE consortium realizes extensive intersectoral transfer of knowledge and experience through shared research, secondments and summer schools, promoting the research capacity and competitiveness of its partners and becoming a lasting EU network promoting basic and applied biomedical research, with benefit for European industries and society. International mobility and dissemination will contribute to sharing cultures and knowledge with the scientific community and to promote communication on the importance of research in biomedical engineering to the society.