A multiple function credit card and credit card case is provided. The credit card contains card information. A microprocessor and/or other payment or non payment device is provided in the case and/or card and can be used with a variety of communication methods and for other functions. In a preferred form the microprocessor can communicate with external mechanisms or systems by electronic and other means such as an inductive magnetic track generator, a bluetooth wireless port, an IRDA & IR infra red port, and an RFID/ISO-14443 simulator. An LCD or other display is provided along with a button panel and/or a keyboard in various embodiments or input of data and information to the microprocessor. The microprocessor can also be used to provide the user access to a number of non-financial applications.