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US Dataworks Enters Into Agreement With Union Bank of California to Offer Check Processing Solutions HOUSTON, June 15 /PRNewswire-FirstCall/ -- US Dataworks, Inc. (AMEX:UDW), a leading developer of payment processing software, announced today that it has entered into a strategic alliance agreement with Union Bank of California, N.A., the fourth-largest commercial bank in California, one of the 25 largest banks in the United States, and primary subsidiary of UnionBanCal (NYSE:UB), to jointly offer the best-of-breed payment processing solutions to the market. Among the offerings are US Dataworks' Clearingworks(TM), a comprehensive, fully-automated solution enabling the end-to-end processing of checks through the Automated Clearing House (ACH) as well as image exchange/substitute check processing (Check21), and US Dataworks' recently released Distributive Capture functionality, which allows remote and real-time access to retrieve payment data regularly from an unlimited number of remote locations. This alliance is the third in a series of its kind for US Dataworks. The company has entered into similar alliances with two other large financial institutions. Through their alliances with US Dataworks, these financial institutions are able to offer billers and retailers payment processing solutions that enable them to covert paper checks into electronic transactions. "Our customers are looking for innovative solutions to check payment processing," said Homa Alviri, Vice President, Commercial Product Management and Development, Union Bank. "Union Bank is pleased to join forces with US Dataworks to compliment our current customer offerings with the best and most advanced check processing solutions." "We are honored to have our state-of-the-art check processing solutions added to Union Bank's already impressive portfolio of services," said Charles Ramey, Chairman and CEO, US Dataworks. "Our alliance with Union Bank is further evidence that US Dataworks is creating a niche for itself with astute financial service firms that are positioned to offer their clients premium payment processing solutions." Recent changes in the National Automated Clearing House (NACHA) rules coupled with the passage into law of Check-21 now make it possible for banks, retailers and billers to electronically process paper checks and other forms of payments. The transition to electronic processing is expected to create greater efficiencies and immediate cost savings for the retail and remittance industries. About US Dataworks US Dataworks is a developer of payment processing solutions, focused on the financial services market, federal, state and local governments, billers and retailers. Software developed by US Dataworks is designed to enable organizations to transition from traditional paper-based payment and billing processes to electronic solutions that automate end-to-end processes for accepting and clearing checks. For more information, visit the company's website at http://www.usdataworks.com/ . About Union Bank of California, N.A. San Francisco-based UnionBanCal Corporation is a bank holding company. Its primary subsidiary is Union Bank of California, N.A., one of the 25 largest commercial banks in the country, based on assets at March 31, 2005. Union Bank provides a comprehensive array of personal and commercial financial products and services to individuals, businesses and government agencies, and is differentiated from its competitors by providing personalized, high-quality and responsive service. Except for the historical information contained herein, the matters set forth in this press release, including, but not limited to the statements regarding the growth and potential for the ARC market and the effect capital investment may have of a company's adoption of an ARC solution are forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially, including, but not limited to, the Company's position in the marketplace, our ability to develop and timely introduce products that address market demand, the impact of alternative technological advances and competitive products, market fluctuations, our ability to obtain future financing and other risks detailed from time to time in the SEC reports of US Dataworks, Inc., including its annual report on Form 10-KSB/A for the period ended March 31, 2004 and its quarterly report on Form 10-QSB/A for the period ended December 31, 2004. These forward-looking statements speak only as of the date hereof. US Dataworks disclaims any obligation to update these forward-looking statements. For more information, contact: John Figone - US Dataworks (713) 934-3855 ext. 250 Terrie James - media contact (713) 412-2052 Ken Dennard - investor contact (713) 529-6600 DATASOURCE: US Dataworks, Inc. CONTACT: John Figone of US Dataworks, Inc., +1-713-934-3855, ext. 250; or media, Terrie James, +1-713-412-2052, or ; or investors, Ken Dennard, +1-713-529-6600, or , both for US Dataworks Web site: http://www.usdataworks.com/

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