Systemic UX-Induced Tensions and the Limits of Smartphone-Based Care

Systemic UX-Induced Tensions and the Limits of Smartphone-Based Care On Contextual Suitability, Channel Logic, and Pre-Market Reflection in Digital Health Ian Ardaseer Ethivolve — Ethics-Driven Innovation for Human-Centred Digital Health 2025 Abstract Digital health applications are increasingly positioned across Europe as scalable, accessible, and cost-effective instruments for healthcare delivery and prevention. Evaluation frameworks for such applications traditionally focus on usability, accessibility, clinical validity, and legal compliance. This paper argues that these evaluations are structurally incomplete because they implicitly assume contextual neutrality: the assumption that the digital environment in which e-health interventions operate does not independently influence their functional suitability. A substantial share of contemporary e-health and preventive interventions is delivered through smartphone-based usage contexts. These contexts are not defined solely by the individual application, but by the smartphone device as an integrated system, including the operating system, notification architecture, background processes, and concurrent interaction streams generated by other applications. This digital environment is structurally designed around interruption, continuous responsiveness, and engagement reinforcement. When care interventions that presuppose cognitive calm, self-regulation, or behavioural reduction are deployed within such environments, a form of contextual incompatibility may arise between the functional care objective and the behavioural logic of the chosen digital channel. This incompatibility does not imply a failure of the intervention itself, but indicates a potential limitation or conditional dependency of its intended functioning on system-level characteristics of the usage context. The paper develops a system-ethical and legal perspective on this issue and introduces a Pre-Market Design Assessment (PMDA) as a non-normative governance lens. PMDA does not constitute an approval or evaluation mechanism, but serves as a structured pre-implementation reflection layer to assess whether a digital usage context is functionally congruent with the care objective of an intervention. The 1 central conclusion is that digital health cannot be assumed to be context-neutral and that, depending on the intervention objective, the suitability of the smartphone device and its UX architecture constitutes a legally and functionally relevant factor within responsible digital health governance, prior to effect measurement and implementation decisions. 1 Introduction: The Implicit Assumption of Context Neutrality Over recent decades, digital technologies have evolved from discrete tools into permanent interaction infrastructures that structure communication, work, social relations, and healthcare. Within healthcare systems, digital interventions are increasingly deployed to support monitoring, prevention, behavioural change, and mental well-being. These interventions no longer function as occasional instruments, but as components of continuous digital ecosystems in which attention, availability, and responsiveness are persistently engaged. Despite this transformation, digital health innovation is still predominantly evaluated as if the individual application constituted the primary system of relevance. Regulatory, research, and funding frameworks largely focus on application-level design, functionality, accessibility, and legal compliance. Implicitly, this approach preserves the assumption that the digital environment in which an intervention is deployed plays a neutral, passive, or merely instrumental role. This paper challenges that assumption. Smartphone-based usage contexts are not neutral carriers of care, but actively designed interaction systems optimised for continuous responsiveness, interruption, and engagement. Crucially, this context does not coincide with any single application. The relevant care environment encompasses the device as a whole: the operating system, notification mechanisms, background processes, and parallel interactions with other applications. Accordingly, the question of digital health suitability cannot always be answered at the level of the individual application. In certain cases, it shifts to the level of the digital usage context itself. This shift constitutes the analytical starting point of this paper. 2 Methodological Position and Scope 2.1 Analytical Approach This paper adopts a conceptual-analytical approach grounded in digital ethics, governance studies, and law-and-technology scholarship. It does not present primary empirical research, nor does it advance clinical, medical, or causal claims. The analysis is based 2 on synthesis and interpretation of consistent findings from interdisciplinary literature on cognitive load, attention, and digital interaction (approximately 2022–2025). The objective is not to measure health outcomes, but to identify and articulate systemlevel and design-level tensions that logically precede empirical effect evaluation and policy decision-making. 2.2 Explicit Exclusions This paper: •does not assess the clinical effectiveness of specific applications; •does not analyse individual behaviour or individual vulnerability; •does not measure health or well-being outcomes; •does not make medical, therapeutic, or diagnostic claims. The analysis is strictly limited to the functional and legal suitability of the digital usage context in which e-health and preventive interventions are deployed. 3 The Smartphone Device as an Active Care Context 3.1 Device-Level UX Architecture Smartphone-based usage contexts are characterised by persistent notifications, multitasking affordances, parallel interaction streams, social comparison cues, and engagement-oriented design mechanisms. These features are structurally embedded in the operating system and interaction architecture of the device, rather than being the result of individual application design choices. From a system perspective, users do not enter a care interaction from a neutral cognitive state, but from an environment in which alertness, responsiveness, and interruption are already activated. Any e-health intervention delivered via a smartphone necessarily operates within this broader context and inherits its behavioural logic. 3.2 Relevance for Care Interventions This context is particularly relevant for interventions that functionally presuppose: •sustained attention; •cognitive calm; •emotional regulation; 3 •behavioural reduction or moderation. When such interventions are embedded within a usage context that simultaneously activates competing behavioural goals—such as immediate responsiveness or re-engagement—a structural tension may arise between intervention objective and channel logic. Limited effectiveness, superficial engagement, or high attrition may in such cases not be attributable solely to intervention quality, but may indicate contextual unsuitability or conditional dependence on additional contextual mitigation. 4 Limits of Existing Evaluation Frameworks Within the European Union, digital applications are primarily evaluated through accessibility standards, usability criteria, and legal compliance frameworks. These instruments are effective in identifying direct interface-level barriers, but are methodologically ill-suited to analyse cumulative interaction dynamics at system level. By focusing on the individual application, properties of the smartphone device as a usage context remain largely unexamined, even though these properties may introduce structurally relevant tensions for care objectives. This constitutes not an incidental gap, but a structural characteristic of existing evaluation approaches. 5 Contextual Incompatibility 5.1 Conceptual Definition Contextual incompatibility refers to a structural mismatch between: 1. the functional requirements of a care intervention, and 2. the behavioural logic of the digital usage context in which it is deployed. Such incompatibility: •is not the result of poor application design; •is not attributable to user error; •cannot be resolved through incremental usability optimisation. It manifests at system level, independent of the intrinsic quality of the intervention. 4 5.2 Means–Ends Incongruence Where the chosen digital channel systematically activates behavioural dynamics that diverge from the intervention’s care objective, the intended functioning of the intervention may become structurally constrained or conditionally dependent on additional contextual measures. This constitutes a prior suitability question that logically precedes empirical effect measurement and is rarely made explicit within existing evaluation frameworks. 6 Legal Relevance of Usage Context under EU Law Under EU law, the suitability of products, services, and measures is not assessed solely on the basis of intrinsic characteristics, but also in relation to context of use, conditions of deployment, and foreseeable effects. This approach is structurally embedded in the proportionality and due care principles applied by the Court of Justice of the European Union. Established case law recognises that structural and cumulative effects may be legally relevant where they are foreseeable and where ex post correction offers insufficient protection. In such circumstances, preventive assessment or intervention may be justified or required to ensure effective protection of the pursued objective. Within the framework of Article 114 TFEU, harmonisation measures are not limited to products or services in the abstract, but may extend to conditions of use and distribution insofar as these conditions structurally influence functioning. Suitability and proportionality assessments may therefore legitimately encompass contextual factors. Applied to digital health, this implies that the smartphone device, operating system, and associated interaction architecture cannot be presumed legally neutral. Where the usage context systematically activates behavioural mechanisms that conflict with the functional objective of a care intervention, contextual unsuitability may arise as a legally relevant design consideration, independent of content quality or compliance status. This interpretation does not introduce new regulatory obligations. Rather, it clarifies that contextual suitability can operate as a legally relevant design parameter within existing proportionality and due care principles, prior to implementation and effect evaluation. 7 Pre-Market Design Assessment (PMDA) The Pre-Market Design Assessment (PMDA) is introduced as a non-normative governance lens to facilitate pre-implementation reflection on the congruence between: •the functional care objective of an intervention, and 5 •the behavioural logic of the digital usage context. PMDA does not function as an approval, certification, or compliance instrument. Its purpose is explicatory rather than regulatory: to make visible whether observed limitations stem from intervention design or from structural misalignment between care objective and channel logic. PMDA is positioned explicitly prior to regulation, not as a substitute for it. 8 Scope and Interpretation This paper does not claim that smartphone-based e-health is inherently ineffective, nor does it advocate restriction of digital care. It identifies an analytical lacuna: the absence of explicit assessment of the digital usage context as an active determinant of care suitability. The contribution is complementary to empirical research and does not seek to replace it. 9 Conclusion Digital health cannot be assumed to be context-neutral. Where the smartphone device and its UX architecture systematically activate behavioural mechanisms that conflict with the functional objective of a care intervention, contextual unsuitability may arise, depending on the intervention objective, independently of application quality. By making this contextual dimension explicit and introducing PMDA as an analytical lens, this paper contributes to a more mature, preventive, and ethically robust approach to digital health governance. Indicative Background References (Non-Exhaustive) This paper is conceptual and governance-oriented and presents no empirical effect measurements or causal claims. It draws on established interdisciplinary literature on digital interaction environments, cognitive load, human–computer interaction, engagement architectures, and proportionality in EU law. References serve conceptual anchoring only and do not constitute an exhaustive literature review. Intellectual Background (Declarative) This paper builds on interdisciplinary insights from digital ethics, systemic responsibility, governance studies, and human-centred design. The analysis is developed from a legalconceptual perspective and focuses on structural design and context questions that precede empirical evaluation and policy formulation. 6 The paper contains no technical methods, algorithmic descriptions, or implementation details, and introduces no normative standards. Its purpose is to articulate an analytical lacuna within existing evaluation and governance frameworks, thereby creating space for careful, proportionate, and preventive reflection on the suitability of digital care contexts. 7