of the accuracy provided may be provided by the operator or may be automatic in response to feedback or lack thereof by the device using the card in this fashion the multi card may then be placed into a card reader or other device which reads the magnetic pattern from the magnetic strip to allow the holder access to the account services or features associated with the stored data or pattern it will be recognized by one of ordinary skill in the art from the teachings herein that the invention allows access to numerous accounts services features etc with just one card thereby eliminating the need to carry store or retain numerous cards other features may be combined with the invention as well or as the case may be the invention may be combined with other functions examples including personal reminder and memory capability calculator and clock or even telephone and television functions other sequences of operation of the invention may be utilized as well for example the key pad may be used to enter a convenient select designator for example a bc representing bank card or a pbc indicating personal bank card or any other convenient select designator the select designator will then cause the account identifier to be displayed on 5 and the proper pattern loaded into 4 in addition the loading of pattern into 4 may be caused to occur only when another command is generated by the operator or only upon or after insertion of the card in.