The invention relates to a device for reading information stored on an information plate (2) and/or writing information on an information plate (2). The invention is characterized in that the device comprises at least one position switch (1) for recognizing the position of the information plate (2), in that the position switch (1) comprises at least two detection elements for scanning two mutually distanced reference points, and in that said reference points are arranged on the circumference of a circle whose center corresponds to the center of the information plate (2) in a reference position.
