Smart stores use ubiquitous digital signages to show information, images and videos, on their items, e.g., selling prices and advertisements. However, most signages tend to always or periodically show the same information to anyone. This paper presents a framework for easily developing novel digital signage whose content are aware of contextual changes in the real world. To spatially bind items and information, the framework automatically deploys programs for displaying contents at digital signage close to the items. It was constructed as a general-purpose middleware system for selecting and deploying programs with information according to context.