Regaining Trust: Impact of Transparent User Interface Design on Acceptance of Camera-Based In-Car Health Monitoring Systems

TL;DR

This study shows that transparent user interface design in camera-based in-car health systems improves user trust and acceptance by reducing privacy concerns, without adding onboarding time.

Contribution

It demonstrates that transparent onboarding designs significantly enhance user trust and experience in privacy-sensitive in-car health monitoring systems.

Findings

Transparent design reduces perceived creepiness.

Trust in data use increases with transparency.

User experience improves without longer onboarding.

Abstract

Introducing in-car health monitoring systems offers substantial potential to improve driver safety. However, camera-based sensing technologies introduce significant privacy concerns. This study investigates the impact of transparent user interface design on user acceptance of these systems. We conducted an online study with 42 participants using prototypes varying in transparency, choice, and deception levels. The prototypes included three onboarding designs: (1) a traditional Terms and Conditions text, (2) a Business Nudge design that subtly encouraged users to accept default data-sharing options, and (3) a Transparent Walk-Through that provided clear, step-by-step explanations of data use and privacy policies. Our findings indicate that transparent design significantly affects user experience measures, including perceived creepiness, trust in data use, and trustworthiness of content. Transparent onboarding processes enhanced user experience and trust without significantly increasing onboarding time. These findings offer practical guidance for designing user-friendly and privacy-respecting in-car health monitoring systems.