Abstract: The invention relates to a method (1), a device or a system for inferring a plantar pressure line (30), the solution comprising: loading (200) a correlation model, said correlation model defining a relationship between a plurality of data obtained from plantar pressure sensors and a plurality of foot angle values relative to a predetermined standard; calculating (400) foot angle values relative to the predetermined standard, based on movement data generated by an inertial measurement unit 21 at at least two moments of a bearing phase of the foot of said individual; and inferring (500) a plurality of pressure centres to form the plantar pressure line (30) of the foot of the individual, based on angle values calculated at the at least two moments of the bearing phase of the foot and on the correlation model.