Background: The proliferation of mobile devices has enabled new ways of delivering health services through mobile health systems. Researchers and practitioners emphasize that the design of such systems is a complex endeavor with various pitfalls, including limited stakeholder involvement in design processes and the lack of integration into existing system landscapes. Co-design is an approach used to address these pitfalls. By recognizing users as experts of their own experience, co-design directly involves users in the design process and provides them an active role in knowledge development, idea generation, and concept development. Objective: Despite the existence of a rich body of literature on co-design methodologies, limited research exists to guide the co-design of mobile health (mHealth) systems. This study aims to contextualize an existing co-design framework for mHealth applications and construct guidelines to address common challenges of co-designing mHealth systems. Methods: Tapping into the knowledge and experience of experts in co-design and mHealth systems development, we conducted an exploratory qualitative study consisting of 16 semistructured interviews. Thereby, a constructivist ontological position was adopted while acknowledging the socially constructed nature of reality in mHealth system development. Purposive sampling across web-based platforms (eg, Google Scholar and ResearchGate) and publications by authors with co-design experience in mHealth were used to recruit co-design method experts (n=8) and mHealth system developers (n=8). Data were analyzed using thematic analysis along with our objectives of contextualizing the co-design framework and constructing guidelines for applying co-design to mHealth systems development. Results: The contextualized framework captures important considerations of the mHealth context, including dedicated prototyping and implementation phases, and an emphasis on immersion in real-world contexts. In addition, 7 guidelines were constructed that directly pertain to mHealth: understanding stakeholder vulnerabilities and diversity, health behavior change, co-design facilitators, immersion in the mHealth ecosystem, postdesign advocates, health-specific evaluation criteria, and usage data and contextual research to understand impact. Conclusions: System designers encounter unique challenges when engaging in mHealth systems development. The contextualized co-design framework and constructed guidelines have the potential to serve as a shared frame of reference to guide the co-design of mHealth systems and facilitate interdisciplinary collaboration at the nexus of information technology and health research.

With the eIDAS 2.0 legislation, the European Union seeks to establish a digital identity data ecosystem and to empower citizens to manage digital credentials from various sources through an ID wallet interface. To achieve this, governments must develop holistic orchestration models integrating technical, regulatory, and economic perspectives. This approach will foster ecosystem value creation, address orchestration tensions, and design sustainable operating models for various ecosystem actors. While IS research has explored private-sector governance mechanisms in platform and data ecosystems, a research gap exists in understanding public–private orchestration where governments act as orchestrators. We address this through a structured document analysis of 80 position papers from various stakeholders participating in a public government consultation process and 14 semi-structured in-depth interviews. By examining ecosystem value creation mechanisms, orchestration tensions, and monetization challenges, we identify two government orchestration standard types for the ID wallet provision. The Government ID-Infrastructure Wallet model embodies an ecosystem-integrated public infrastructure, while the Trust ID Wallet Federation exemplifies a dynamic and competition-driven approach. By bridging the self-sovereign identity ecosystem paradigm with digital identity infrastructure research, our work contributes to the understanding and theoretical development of data ecosystems and digital identity research from a government perspective.