Understanding and Mitigating Technology-Facilitated Privacy Violations in the Physical World

We are constantly surrounded by technology that collects and processes sensitive data, paving the way for privacy violations. Yet, current research investigating technology-facilitated privacy violations in the physical world is scattered and focused on specifc scenarios or investigates such violations purely from an expert's perspective. Informed through a large-scale online survey, we frst construct a scenario taxonomy based on user-experienced privacy violations in the physical world through technology. We then validate our taxonomy and establish mitigation strategies using interviews and co-design sessions with privacy and security experts. In summary, this work contributes (1) a refned scenario taxonomy for technology-facilitated privacy violations in the physical world, (2) an understanding of how privacy violations manifest in the physical world, (3) a decision tree on how to inform users, and (4) a design space to create notices whenever adequate. With this, we contribute a conceptual framework to enable a privacy-preserving technology-connected world.

• Security and privacy → Human and societal aspects of security and privacy; • Human-centered computing → Human computer interaction (HCI).