Architecture and prototype integrating spatial context into web applications, mapping location-based services onto a unified model that supports dynamic, map-centric content on mobile devices. Demonstrated how a single framework can drive multiple location-aware features without rewriting backend logic.">
Location-based services for users on the move provide a convenient means of filtering information based on current geographical position. However users also often want to retrieve or capture information associated with past or future locations. We show how new technologies for interactive paper can be used to augment conventional paper maps with location-based services using a combination of user tracking and pointing to the map to specify location.