This document discusses mixed-initiative interaction approaches for public displays. It outlines the motivation to make displays more integrated with their surroundings. Challenges include inferring the social context and providing recognizable interactive features. The approach involves using "digital footprints" from interactions to help displays characterize places and adapt. Objectives are to study interaction mechanisms that generate useful footprints and how to present features understandably. The methodology examines footprints, adapts interface conventions, and tests solutions in real settings. Current work analyzes a framework for context-aware adaptation and interaction conventions from standard systems.