What changes when knowing yourself becomes a digital product? Whether it's calories, steps, blood or mood ratings: mobile devices carried on the body measure, monitor and coach everyday behavior and bodily performances. The technologically transmitted investigation, direction and optimization of the self – so-called »self-tracking« – is establishing not just new relations between body, technology and knowledge, but the border between the guidance of the self and of others is blurring. The articles in this volume inquire into the social conditions and effects of these transformations and the associated changes of contemporary self and bodily relations.
