National audienceThe present paper describes the main idea of a new information system architecture dedicated to the animal geolocation acquisitions. It is applied to traceability of beefs in Brazil. In case of sanitary alerts, the system should be able to determine the animals which have been in contact with a diseased animal. This proposal is issued from studies undertaken in the project OTAG supported by the European Union. OTAG focuses on improving methods and geotechnologies for recording reliable and accurate data on beef production. OTAG develops an operational geo-decisional system to track and trace the mobility, provenance, and state of beef cattle. The presented method enables the acquisition of animal geolocations at a large scale. It minimizes the quantity of devices equipped on animals, and consequently the global economical and energetic costs of the system
