MIRAGE: Mixed Reality Alerts for Guarding Against Environmental Fall Hazards

Abstract

This study investigates the effectiveness of Mixed Reality (MR) warnings for fall hazards, focusing on user perception and the impact of warning size, color, and visual complexity. Using a commercial off-the-shelf MR device, three different warning sizes were displayed in front of a staircase, and data were collected from twelve participants through semi-structured interviews. Findings revealed that while larger warnings attracted more attention, they sometimes became distractions instead. Participants preferred conspicuous colors and medium-to-large warnings but noted the need for these elements to blend seamlessly into the real-world environment to avoid cognitive overload. Additionally, participants expressed a desire for MR warnings in more safety-critical environments, such as road traffic scenarios. These results highlight the need for a balanced approach to MR warning design, ensuring they are noticeable without being intrusive to enhance safety in dynamic environments.