A card reader capable of automatically reading coded information from cards of at least two predetermined widths, the information being encoded in information fields that may vary in the length of columns and rows from card to card, such fields being referenced with respect to two predetermined orthogonal edges on each card. Movable stop fingers and a guiding edge facilitate aligned insertion of a card with respect to the two orthogonal edges. When a card is being advanced through the reader past a reading station, a circuit that is triggered by a column count wheel generates a signal each time that a column of information is in position to be read. This circuit is inhibited by switches that respond to cards of predetermined widths when the trailing edge of a card passes their position, the location of the switches having a predetermined relationship to the last line of coded information to be read on the individual type of card. The circuit can also be inhibited by a signal generated by an encoder upon its detection of an end of text code in the information field. The card reader is shut off at the end of each read cycle by an independent switch responsive to the trailing edge of all cards inserted into the reader.