a method for determining the position and / or change of position of a measured object relative to a sensor , where the sensor preferably has a sensor coil to which an alternating current is applied , is characterized in that a magnet associated with the measured object , in a soft magnetic foil , whose permeability changes under the influence of a magnetic field on the basis of the magnetic field &# 39 ; s field strength and which is arranged in the area of influence of the sensor , brings about a change in the permeability of the foil and in that the change in the permeability of the foil is determined from the latter &# 39 ; s reaction to the sensor , and this is used to determine the position and / or change of position of the measured object relative to the sensor . a sensor arrangement is designed accordingly .