1. A method for processing digit data, comprising: outputting from individual sensor elements of only one row of an array of sensor elements respective continuous streams of data associated with a digit scanned in a transverse direction relative to the one row of sensor elements, wherein the outputting from all of the sensor elements within the row occurs in parallel; discrete sampling the respective continuous streams of data in accordance with a reconstruction characteristic; and reconstructing the discrete sampled data in accordance with the reconstruction characteristic; and wherein said discrete sampling is performed at a sampling rate determined on the basis of a scanning speed in the transverse direction detected by a motion detector.