eService installs 50,000th POS Terminal

21 June 2008 (www.AllPayNews.com) - Dubai, United Arab Emirates - Postilion, a leading provider of software solutions for self-service banking and payments and a division of S1 Corporation (Nasdaq: SONE), today announced that eService S.A., the wholly owned acquiring arm of Poland's largest retail bank, PKO Bank Polski S.A., has installed its 50,000th POS terminal driven by Postilion in Poland.

Since it was established in 1999, eService has used Postilion solutions to drive POS terminals and to acquire and switch card transactions on behalf of banks and card associations. eService is one of the fastest growing merchant acquirers in Poland and one of the largest in Eastern Europe. Today, eService owns approximately 30% of all POS terminals in Poland and processes EMV-based card transactions, as well as those from contactless cards.

"The Postilion platform has allowed us to compete effectively in the Polish market," said Maciej Maciejewski, Technology and Research Department Director, eService. "Its flexible design and solid architecture allow new functionality such as contactless payments to be easily implemented. The system enables merchant management and configurations to be controlled centrally and offers comprehensive management information."

Wiesæaw Kosciukiewicz, Business Department Director at eService, added: "Postilion allows us to provide retailers with a highly reliable, secure, and fast transaction processing service. In addition, it allows us to innovate and differentiate ourselves from other acquirers."

"eService is Postilion's largest POS driving customer in Europe and we congratulate them on reaching this significant milestone," said Mark McMurtrie, Marketing Director, Postilion International. "This achievement is a testimony to the flexibility inherent in Postilion's Merchant Acquiring solution."

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About eService S.A.
eService S.A. was established in 1999 and is the most dynamically growing acquirer in Poland. The company's core business is the authorization and processing of payment cards - VISA, VISA Electron, MasterCard, MasterCard Electronic, Maestro, Diners Club and American Express. eService has built a network of 50 000 devices in Poland. Additional services offered at POS terminals include:
- mobile phone top-up services for all mobile operators in Poland
- support for loyalty programmes and gift cards
- cash back and cash withdrawal.
The company employs 140 employees in its headquarters and 135 sales representatives throughout Poland.
eService S.A. is fully owned by PKO Polish Bank S.A. www.eservice.com.pl

About Postilion
Postilion, a division of S1 Corporation (NASDAQ: SONE), is a leading provider of integrated solutions for self-service banking and payment processing. Our offices, on five continents, serve over 1,500 customers in more than 50 countries. Postilion solutions drive self-service financial transactions and payments, including advanced transactions such as prepay, through Internet access points, ATMs, POS terminals, and phones.

More than 100,000 ATMs and 500,000 POS terminals worldwide run on Postilion solutions. In the United States, over 1,250 credit unions and community financial institutions use Postilion solutions. Built on open systems, Postilion solutions provide consolidated management information, card management, 3DES and EMV enablement, and loyalty management. At the forefront of compliance with new regulations and security enhancements, such as the Payment Card Industry Data Security Standard (PCI DSS) and Visa's Payment Application Best Practices (PABP), Postilion can help customers achieve compliance with the latest data security standards developed by the payment card industry. More information is available at www.postilion.com.

About S1 Corporation
S1 Corporation (NASDAQ: SONE) delivers customer interaction software for financial and payment services and offers unique solution sets for financial institutions, retailers, and processors under three brand names: Postilion, S1 Enterprise and FSB Solutions. Additional information about S1 solutions is available at www.s1.com, www.postilion.com, www.S1enterprise.com, and www.fsb-solutions.com.

For more information, please contact:
Kato Oosthuizen
Tel: +44 (0)1932 574 700
E-mail: kato.oosthuizen@postilion.com

Abhijit Pradhan
Tel: +971 50 5091792
E-mail: Abhijit.pradhan@wallismc.com