Text in English; Abstract: EnglishIncludes bibliographical references (leaves: 128-132)ii, 115, [16] leavesThe first part of the thesis gives a background of the current conventional credit card business, which heavily depends on the magnetic stripe technology. It starts with a brief definition of credit cards, which is followed by the history of credit cards both in the international market and in The Turkish market. Credit cards are designed to satisfy payment purposes and replace cash or checks. The first application of credit cards started at the end of the 19'th century in the United States. But these primitive applications were limited to certain areas or purposes. The understanding of modern credit card usage was first attempted in A...