This paper critically engages with new self-tracking technologies. In particular, it focuses on a conceptual tension between the idea that disclosing personal information increases one’s autonomy and the idea that informational privacy is a condition for autonomous personhood. I argue that while self-tracking may sometimes prove to be an adequate method to shed light on particular aspects of oneself and can be used to strengthen one’s autonomy, self-tracking technologies often cancel out these benefits by exposing too much about oneself to (...) an unspecified audience, thus undermining the informational privacy boundaries necessary for living an autonomous life. (shrink)