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Today internet has pervaded every aspect of life. Through 1993 the infrastructure of www was completed and since then people even with very imited IT knowledge has aceess to virtual information. Through www people can reach information from their houses 24/7 and accordingly the number of people using the internet is rapidly increasing. Network is no longer a playground for computer freaks but a media to reach information rapidly and effectively.
Internet has also changed the way of doing commerce. Borders and distances have dissappeared. In other words internet has unified all human beings irrespective of race, language, colour or nationality. In addition internet has privided new means to offer goods and services. Working hours problem has been overcome so that people can shop 24 hours via internet. There is an intense information process going on over the internet and an increasing ineterest towards cyber shopping. Firms aware of that interest have been using internet for marketing as well as presentation and advertising.
Electronic markets require payment methods that are beyond the conventional means. The international character of internet also creat currency problems. In order to use thse methods securely, one should have a fundamental understanding of these institutions. Since internet is an open access network the payment method need to be very secure.
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