An apparatus for processing input data by means of instructions and outputting the processed data, comprising a central data processing unit, memory means in which the instructions are stored, data input means for inputting the data, and data output means for outputting the processed data, wherein said data input means are arranged for detecting a user's input motion in at least two dimensions, and wherein said data processing unit is arranged for determining representatives of the directions of the detected input motion, wherein the data processing unit is furthermore arranged for carrying out a predetermined instruction from the memory in dependence on the determined values of the representatives of the directions of the input motion and, providing a minimum length or direction has been exceeded, independently of the length or direction of the input motion.