Interfacce. Forme dell'accesso e dispositivi d'intermediazione

Digital interfaces have become pervasive yet increasingly invisible components of everyday life, seamlessly mediating interactions between humans, technologies, and information systems. This introductory essay examines the interface as a relational and operational device that extends beyond its traditional role as a surface of interaction, framing it instead as a dynamic space where users, data, and technological agents continuously shape one another. Drawing on contributions from semiotics, media studies, interaction design, and critical design, the article proposes an interdisciplinary understanding of interfaces as infrastructures of mediation that organize actions, meanings, and social relations across textual, visual, sonic, conversational, and embodied forms. The discussion traces the evolution of interfaces from physical affordances and graphical user interfaces to AI-driven conversational systems, augmented reality, and ubiquitous computational environments, highlighting the growing complexity of human–machine co-enunciation and hybrid interaction. Particular attention is devoted to the political, ethical, and cultural implications of contemporary interface culture, including algorithmic governance, data extraction, surveillance, and biometric technologies. At the same time, artistic and critical design practices are presented as means of exposing the opacity of algorithmic infrastructures and reimagining interfaces as sites of resistance and collective agency. The essays collected in this volume demonstrate how interfaces function not merely as technical tools but as semiotic and design devices that redefine communication, embodiment, creativity, and the relationships between human and non-human actors within contemporary digital environments.