Discussing and Reviewing the Digital Product Passport: An Up-to-Date Bibliometric Analysis

A primary objective of the European Green Deal is the shift towards a sustainable and circular economy, necessitating profound alterations in production and consumption practices. The Digital Product Passport (DPP) is central to this transformation, fulfilling the information requirements and transparency expectations of the Ecodesign Regulation for Sustainable Products (ESPR) and facilitating the effective application of Extended Producer Responsibility (EPR) principles. This research presents a concept-focused bibliometric analysis of the evolving academic landscape of digital product passports (DPPs) from 2021 to 2025, based on publications indexed in Scopus and Web of Science (WoS), analyzed with the R-based Biblioshiny package. Key findings reveal that research predominantly focuses on digital product passports and the circular economy, with rapid growth in DPP publications driven by regulatory mandates under the European Green Deal. Geographically, Germany and Austria emerge as leading contributors, while thematically, circular economy and sustainability dominate the discourse. However, research gaps persist in the implementation of technology and its cross-disciplinary applications. The thematic and structural classification of existing knowledge is crucial for conceptual clarity and addressing research gaps in DPP literature. This research is expected to provide a foundational roadmap for future research on sustainable production and digital traceability ecosystems.