The current research project presents a methodology product design, characterization for different thermoplastic elastomeric mixtures with mechanicals properties evaluation and computer aided engineering simulations (CAE) for ear tags devices applied in the control and semovient identification. From product design and the characterization of reference product through Fourier Transformed Infrared Spectroscopy (FTIR) is achieved new alternative mixtures to the reference, after the exposition to UV radiation for 320 hours, are evaluated through different mechanicals and chemical properties as hardness and FTIR. With the characteristics and 3 geometry designs, a design was selected regarding to the customer requirements from the Product Design Methodology - PDS [1]-[3]. This design and mixtures evaluation obtained were the initial conditions for the analysis CAE in Software Sigmasoft® specialized in mold injection simulation for thermoplastic elastomeric materials. The simulations reveal important results in temperature, packing pressure and other variables to know in the adequate mixture processing with the best performance properties, with the goal to determine de best processing conditions, and different requirements to know in the mold manufacturing achieving an optimum final product processing.