The proliferation of mobile devices and wireless communications contributed to the development of context-aware applications. This work aims to develop a system that gathers users’ contextual information, in indoor environments, and handles such information to help users in their daily tasks. The system comprises an interface hybrid agent that is aware of the user’s context and infers relationships between users by observing their interactions. The users’ location is estimated using an existing Wireless LAN, to facilitate the propagation and integration of the system in other environments. To validate our initial hypothesis, we performed two experiments. The first intended to measure the usefulness of the system to users. The latter evaluates the accuracy of the estimated location. The results indicate that users found the system useful and the estimated location is accurate.

© 2011 Lara Leite et al. This is an open access article, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.