Method for measuring structures in a fingerprint with a linear sensor

Method for measuring structures in a fingerprint or the like mark, comprising measuring a selected characteristic of the surface of the fingerprint using a sensor array comprising a plurality of sensors (1), being placed in contact with, or near, a portion of the surface, comprising measuring said characteristics in at least one line of measuring points along an elongated portion of the surface at selected time intervals, with the sensor array an essentially one-dimensional array, and moving the surface relative to the sensor array in a direction perpendicular to the sensor array direction, so that the measurements are taken in different parts of the surface thus providing a set of lines of measuring points wherein at least one measurement is provided each part of the surface in the direction of movement, characterized by compensating the movement of said finger by adjusting, in a time interval given, the number of lines of measuring points for providing a new set of lines of measuring points and combining said new set of lines of measuring points which are to provide a two dimensional representation of said characteristics of the surface.