Anti-theft system for stores

An anti-theft system for securing products inside a defined space, the system comprising:

• at least one tag provided with an electronic chip capable of transmitting a first signal in a repetitive manner and generated in a first technology, the signal only capable of being received within a limited perimeter around the tag, the tag being connected to a product on display by a disconnectable mechanical connection, the signal comprising information which allows the product to be identified,
• an electronic transmitting device, installed at a fixed position within said perimeter, the device being capable of receiving the first signal when the device is located within said perimeter, and of sending, in a repetitive manner, a second signal capable of being received outside the perimeter and generated in a second technology that is different from the first technology, the second signal comprising at least the information for identifying the product as well as a value related to the distance between the tag and the transmitting device, and
• at least one fixed or portable computer, configured such that it receives the second signal and provided with a digital application which is configured such that it manages, on the basis of said second signal, the presence of the tag within a defined security zone around the transmitting device, the fixed or portable computer further being configured such that it carries out a procedure for pairing the tag by producing a direct link according to the first technology with the tag without passing via the electronic transmitting device, when the electronic chip is operating in a so-called connectable mode.