International audienceInteractive tables are increasingly present not only in a research context but also in everyday life. One challenge still has to be taken up concerning interaction with several people around an interactive table. The framework of our research relates to an interactive table named TangiSense, which is equipped with RFID technology. The interaction is no longer the result of touching the table, but comes from handling tangible objects placed on the table. The use is closer to the natural use of a table. This technology makes it possible to identify the objects, which can be coupled with the users. Starting from this principle, the article proposes the use of RFID tags to collect the elements of context awareness in order to adapt the workspaces to the various possible situations around a table (work alone or with several users, on a common or individual space). An algorithm of space division is proposed, and evaluations are carried out in order to assess its global contribution. The article ends with a conclusion and some prospects

International audienceNumerous academic and industrial studies and developments concerning interactive tabletops are paving the way for new educational applications. We have developed an interactive tabletop application equipped with RFID technology. This tabletop, called TangiSense, is based on a Multi-Agent System that allows users to associate information with behaviors to manipulate tangible objects. The application involves the recognition of basic colors. With the application, children are required to manipulate tangible objects. Their task involves recognizing objects that have "lost" their dominant color and placing these objects in appropriate colored areas. A tangible magician object automatically analyzes the filled zones and provides children and their teacher with virtual and vocal feedback. This application has been evaluated in a field study with children 3 to 5 years of age. The initial results are promising and show that such an application can support interaction and collaboration, and subsequently educational situations, among young children

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After having outlined the uses of new technologies such as smartphones, touchscreen tablets and laptops, in this paper we present the TangiSense interactive table, equipped with RFID technology tagged on tangible objects, as new paradigm of interaction for ambient intelligence. We propose a problem space and some scenarios illustrating the distribution of user interfaces within the framework of collective work. A case study centered on crisis management units, i.e. a collaborative situation, with multiple actors who are geographically separate, makes it possible to illustrate possible distributed uses and the TangiSense s capacities. To finish, the chapter presents the directions under consideration for our future research.

After having outlined the uses of new technologies such as smartphones, touch-screen tablets, and laptops, this article presents the TangiSense interactive tabletop, equipped with RFID technology tagged on tangible objects, as a new paradigm of interaction for ambient intelligence. Within its framework, this article aims to distribute surfaces (tables) interacting mainly with tangible objects. Leads for interactive surface distribution such as interactive tables are given. The article proposes to describe some tangible objects, which are the interaction supports; these are called Tangigets. They are defined according to an augmented Presentation-Abstraction-Control structure to take the tangibility element into account. Six categories of Tangigets are also proposed, which are tangible objects, and the supports of distributed collaboration. To validate the Tangiget concept and its use on the TangiSense tabletop, illustrations in centralized and distributed configurations are proposed. A first evaluation is also presented. To conclude, the article presents the directions under consideration for our future research.

By using an interactive table, it is possible to interact with several people (decision-makers) in a simultaneous and collaborative way, around the table, during a simulation session. Thanks to the RFID technology with which the table is fitted, it is possible to give tangible objects a unique identity to include and to consider them in the simulation. The paper describes a context model, which takes into consideration the specificities related to interactive tables. The TangiSense interactive table is presented; it is connected to a Multi-Agent System making it possible to give the table a certain level of adaptation: each tangible object can be associated to an agent which can bring roles to the object (i.e., the roles are the equivalent of a set of behaviors). The Multi-Agent System proposed in this paper is modelled according to an architecture adapted to the exploitation of tangible and virtual objects during simulation on an interactive table. A case study is presented; it concerns a simulation of road traffic management. The illustrations give an outline of the potentialities of the simulation system as regards the context-awareness aspect, following both the actions of the decision-makers implied in simulation, and the agents composing the road traffic simulation.

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