Qualitative Study of Participant Impressions as Simulated Patients of MediLinker—A Blockchain-Based Identity Verification Application

Abstract

Abstract Objective In this study, we obtained participants' views on using MediLinker—a blockchain-based identity verification and personal health information management application. We also gathered their views about the use of blockchain technology for controlling and managing personal health information, especially in the context of a global health crisis such as a pandemic. Methods Online semistructured interviews were conducted with 29 simulated patients (i.e., avatars) who used MediLinker between February and May 2020. Interview data were analyzed qualitatively using a phenomenological approach to thematic analysis. Results Most of the participants noted that they do not know what blockchain is nor understand how it works. Nonetheless, in the context of the study, they trust blockchain as a technology that can enhance data protection and privacy of their personal health information. Participants noted that MediLinker is a useful application that allows patients to easily input, share, and revoke personal health information. As a proof-of-concept application, participants also noted several issues and recommendations that can serve as points of improvement when developing subsequent versions of MediLinker. In the context of using MediLinker as part of a telemedicine system during a pandemic, participants noted that it facilitates social distancing, makes clinical transactions efficient and convenient, and enhances identity verification. Conclusion In general, the findings lay the foundation for a user-centered approach in developing future iterations of MediLinker and other patient-facing blockchain-based health information technologies. Also, the findings provide important insights into how people perceive blockchain-based health information technologies, especially during a pandemic.