My own private kiosk: privacy-preserving public displays

Ubiquitous, high-resolution, large public displays offer an attractive complement to wearable displays. Unfortunately, the inherently public nature of these public displays makes them unsuitable for displaying sensitive information. We present EyeGuide, a wearable system that allows the user to obtain information quickly from a public display without sacrificing privacy. To this end, EyeGuide employs a lightweight head-worn eye-tracker for hands-free object selection and an earphone for private communication. Our system supports public displays that are dynamic (e.g., a large plasma screen) and static (e.g., a large printed map). In our printed map scenario, EyeGuide whispers verbal directions via earphone to a user, based on where they are looking on the map. Using a technique we call "gaze steering," the system guides the user\´s eye position to specific locations. In our dynamic public display scenarios, EyeGuide presents documents (e.g., maps) that contain sensitive data in a way that preserves privacy.