@inproceedings{59019,
  abstract     = {{To facilitate the growing demand for a universal means of digital identification across services, while preserving user control and privacy, multiple digital identity implementations have emerged. From a technical perspective, many of these rely on established concepts within cryptography, allowing them to provide benefits in terms of security and privacy. Recent legislation also promises broader recognition and acceptance of digital identities, both in the digital world and beyond. However, research into the usability, accessibility, and user understanding of digital identities is rare. We argue that the development of usable digital identity wallets is vital to the successful and inclusive application of digital identities in society. In this vision paper, we describe our research plans for obtaining a better understanding of how to develop these usable digital identities wallets.}},
  author       = {{Last, Yorick and Arias Cabarcos, Patricia}},
  booktitle    = {{Symposium on Usable Security and Privacy (USEC) 2025}},
  isbn         = {{979-8-9919276-5-9}},
  location     = {{San Diego, U.S.A.}},
  title        = {{{Vision: Towards True User-Centric Design for Digital Identity Wallets}}},
  year         = {{2025}},
}

@inproceedings{53532,
  abstract     = {{Documents are largely stored and shared digitally. Yet, digital documents are still commonly signed using (copies of) handwritten signatures, which are sensitive to fraud. Though secure, cryptography-based signature solutions exist, they are hardly used due to usability issues. This paper proposes to use digital identity wallets for securely and intuitively signing digital documents with verified personal data. Using expert feedback, we implemented this vision in an interactive prototype. The prototype was assessed in a moderated usability test (𝑁 = 15) and a subsequent unmoderated remote
usability test (𝑁 = 99). While participants generally expressed satisfaction with the system, they also misunderstood how to interpret the signature information displayed by the prototype. Specifically, signed documents were also trusted when the document was signed with irrelevant personal data of the signer. We conclude that such unwarranted trust forms a threat to usable digital signatures and requires attention by the usable security community.}},
  author       = {{Last, Yorick and Geels, Jorrit and Schraffenberger, Hanna}},
  booktitle    = {{Extended Abstracts of the CHI Conference on Human Factors in Computing Systems (CHI EA ’24)}},
  location     = {{Honululu, HI, USA}},
  publisher    = {{ACM}},
  title        = {{{Digital Dotted Lines: Design and Evaluation of a Prototype for Digitally Signing Documents Using Identity Wallets}}},
  doi          = {{10.1145/3613905.3650977}},
  year         = {{2024}},
}