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TSA To Present At William Blair and Co 26th Annual Growth Conference June 29 2006

Monday, June 19, 2006

The presentation will be web cast by Wall Street Webcasting at 3:50 p.m. CDT and interested persons may access a real-time broadcast at http://www.wsw.com/webcast/blair6/tsai/. Following the conference an archived webcast replay will be available at www.tsainc.com/investors.

Notes to editors

About Transaction Systems Architects, Inc.

The Company’s software facilitates electronic payments by providing consumers and companies access to their money. Its products are used to process transactions involving credit cards, debit cards, secure electronic commerce, mobile commerce, smart cards, secure electronic document delivery and payment, checks, high-value money transfers, bulk payment clearing and settlement, and enterprise e-infrastructure. The Company’s solutions are used on more than 1,960 product systems in 83 countries on six continents.