The project involves designing and prototyping new antennas adapted to the use of RFID technology in the processes of a shop, particularly in real-time inventory and location of all products, and antitheft control. Carry out real-time inventories and location of products reduces the processing time and costs invested in certain respects. Then, the purpose is to eliminate the maximum number of losses and make the stay of a customer in the store as comfortable as possible. Traditional RFID antennas have been designed to work in logistics and warehouse environments. In a shop, the antenna must be adapted to various commercial equipments, such as shelves, sales desks, doors, fitting rooms, etc. Moreover, distribution networks signal to the antenna must be adapted to an environment with a density of antennas higher than usual in logistic applications. This project is part of what is known as ambient intelligence, because it provides a store with a real-time knowledge of what is happening.