Abstract : Starting from Michel Foucault's conception of devices in terms of power, this article focuses on the subjective relationship that we experiment with devices, based on playing and illusion. The concept of device will be put in perspective of various conceptions: the tactical uses of technology developed by Michel de Certeau, Winnicott's transitional objects, and heterotopy also by Foucault. These conceptions will lead us to consider devices as texts, which means productivity. Thus, it will be possible to take into account the illusionary part of our relationship to world mediated by devices. Such a position is necessary to understand devices as a resource and not only as a technology of control. This change of perspective will lead us to examine the construction of the symbolic understanding of our word by using devices. These theoretical positions will then help us to investigate the mediations over the Internet as a possible way to articulate the subjective relationship to devices with the social construction of meaning.