The LAI (Integrated Actuators Laboratory) develops a smart sole to prevent ulcerations in diabetic patients. The insole is equipped with multiple cylinder-shaped actuators capable of adjusting locally the pressure in plantar regions where high values appear. Each of the sole's cylinder is made of a cushion whose flexibility is electrically controlled with a valve thanks to the magnetorheological (MR) fluid that flows inside. MR fluids are smart materials that stiffen when an external magnetic field is applied to them. The ferromagnetic particles inside the MR fluid form chain-like structures parallel with the lines of the magnetic field. When those structures form, the viscosity of the fluid increases and the fluid passes from a liquid state to an almost solid state. Previous studies [6] have shown that when pressure is applied to the chain-like structures, the MR fluid impedance changes. This phenomenon may be used for pressure sensing. This project aims to analyze the feasibility of detecting a change of impedance when pressure is applied to the chain-like structures.