To enhance customer loyalty, Petrol companies are constantly looking for new marketing tools to collect customer behavior al information and to provide better service .  The main feature for such a smart card scheme is to securely simplify payment transaction and at the same time p rovid e data for customer behavior al analy sis . E-Fueling smart cards, with a build-in loyalty program offer the best solution and is easy to manage .  Our principal is the first to offer E-Fueling with chip card technology to the Chinese market. T oday, t he E-Fueling chip card operating system has proven itself well. The available memory space support s tailor made applications such as loyalty and retail transactions as well as effective database compilation .