Human-centric sensing and actuation promises to support the user in everyday life by instrumenting her vital parameters and her environment, and by reacting to it. To this end, sensing and actuating devices such as smartphones, smart glasses, smart watches, wearables, medical implants, or exo-skeletons produce and consume a plethora of personal data. If this data is not protected, the privacy of the user is severely endangered. Goal of project C1 is to investigate how decentralized techniques can protect the privacy of the user in human-centric sensing and actuation scenarios. Moreover, the legal framework for data protection law is to analyzed if it is still adequate for the aforementioned scenarios and in how far it has to be evolved.