Paul Couderc

A Framework for Interacting Smart Objects

In this paper, we propose a framework enabling physical objects used everyday to participate in smart interactions. These objects are RFID tagged containing self description of their properties. The paper describes how smart context aware services can be supported directly by a collection of smart objects. One of the main advantage of our approach is the smart objects being piggybacked with necessary information, optimized enough to make inferences locally, without dependence on external system support.

Geo-Linda: a Geometry Aware Distributed Tuple Space

This paper presents Geo-Linda, a physically distributed tuple space. Geo-Linda targets ubiquitous computing applications involving the detection of movement patterns of objects and people, such as the meeting of two people or the insertion of a product in a shopping cart, the loading of container in a boat... Existing distributed tuple spaces suffer two main limitations: (1) they cannot detect precisely movement patterns, leading to inconsistencies between the state of applications and the physical world; (2) they cannot detect several kinds of movement patterns. Geo-Linda tackles these two limitations, by introducing a geometric addressing mode and two new reading operations to access the tuple space. In this paper, we illustrate Geo-Linda with several small examples and a full application.

Enabling Context-Awareness from Network-Level Location Tracking

The development of mobile computing combined with the exponential growth of the Internet makes it possible to access informations and services from everywhere. However, users mobility also means that the context in which the information system is used change dramatically. To be useful in these new environments, applications will have to be adaptive, which requires context-awareness. We propose in this paper an efficient way to export context-dependent informations to applications by exploiting location knowledge available at the network level. This method is illustrated by a prototype using Mobile-IP and a context-aware Web browser.

Implementation of the SECURE trust engine

We present the implementation of Secure and a SPAM filter that uses it to classify messages as SPAM based on trust in senders.

Design of a Smart Information Diffusion Service for Museums Using RFID-Based Location System

In this paper, we present the design and the imple- mentation of a contextual and multimodal information diffusion system for museums. We propose a proactive service (1) with the ability to sense the profile of nearby visitors, using RFID and WLAN connectivity, (2) that adapts the information content to the target user, and finally (3) that distributes automatically the information to several devices, collective devices like large wall panels disseminated in museum or directly to digital guide carried by visitors.

Architectures de systèmes pour l'informatique diffuse

The goal of ubiquitous computing is to assist the user in its everyday tasks. Because of their link to human activities, ubiquitous computing applications are naturally coupled to the physical world. In this article, we present the different system architectures for ubiquitous applications. We classify the architectures according to their data storage mode and their execution mode. Each of these two criteria can be either physical of virtual. Thanks to these criteria, we distinguish three categories of architectures: the physical architectures that have a physical data storage and a physical execution mode; the virtual architectures that have a virtual data storage mode and a virtual execution mode; the architectures that have a physical data storage and a virtual execution mode.