<![CDATA[The development of biohacking within the framework of transhumanism has introduced new forms of bodily modification, such as subdermal magnetic implants, which challenge the boundaries of human existence. Although this phenomenon has been widely examined from technical and social perspectives, ethical analyses based on the thought of Hans Jonas remain limited. This study aims to analyze the ethical problems of biohacking and to assess the limits of technological intervention in the human body through Jonas’s ethics of responsibility. This research employs a qualitative method with a philosophical-normative approach, using literature review and empirical data related to subdermal magnetic implant practices. The findings reveal that biohacking is not merely an issue of individual autonomy but also raises broader ethical concerns, including technological risks and uncertainties, the normalization of body modification, and the shifting understanding of the human body from a biological entity to a technological object. From Jonas’s perspective, such practices demand responsibility for long-term consequences and therefore cannot be justified solely on the basis of individual freedom. The novelty of this study lies in the development of an ethical analysis model of biohacking based on Jonas’s ethics of responsibility, emphasizing the principle of precaution (heuristics of fear) and the sustainability of humanity as key moral considerations. This study concludes that biohacking should be understood as an ethical issue requiring critical reflection to preserve human dignity and future existence.]]>
