ABSTRACT
This chapter focuses on the specific practices of a set of people in Denmark, who voluntarily, and reflexively generate, process and analyse data about their lives. There are three intertwined process modes that define dopplegangering: enactment, existence and entanglement. After a short background of the Quantified Self (QS) movement, introduces self-trackers from the ethnographic research. This chapter explores the modern body/self and processes of objectification and subjectivation in self-tracking and the negotiating/relating to the other digital dopplegangering: The chapter focuses especially on embeddedness, continuities and discontinuities. Our critical perspective is based on an entanglement conceptualization that acknowledges the idealistic background of QS, the positive hopes and actual effects of self-tracking as well as problematic forms of power relations and exploitations. In this endeavour we share a basic idea of self-trackers, that the quantified self is not an end in itself. It should be one way towards a better qualitative self and an enriched sociality.
