AuthentiDate And Kodak Join Forces To Pilot Kodak's United States Postal Service EPM-enabled Secure Email Service.

SCHENECTADY, N.Y. -- AuthentiDate Holding Corp. (NASDAQ:ADAT) announced today that AuthentiDate and Eastman Kodak Company (NYSE:EK) will test the interoperability of the United States Postal Service Electronic Postmark(R) Service (USPS(R) EPM(R)) with Kodak's Secure Email Service (SES).

The two companies will work together to pilot Kodak's Secure Email Service incorporating the USPS Electronic Postmark Service. Backed by the integrity of the United States Postal Service, the EPM detects any alteration of the data. Application of the EPM automatically creates an electronic "fingerprint" of electronic file content, which is then stored in the USPS EPM repository. This allows trusted third-party authentication that verifies a file has not been altered once the EPM has been affixed.

The pilot program, which is being led by Kodak, is expected to include several health care organizations, and is part of a previously announced push by the Kodak Health Group into the healthcare IT market.

"Integrating the USPS Electronic Postmark Service can bring a new level of trust and integrity to our Secure Email Service enabling customers to take full advantage of its speed and simplicity to securely deliver patient data," stated Patrick Faure, Privacy and Security Services Manager for Kodak's Health Group.

"AuthentiDate is pleased to be working with Kodak on its secure email application," stated Suren Pai, AuthentiDate's CEO. "This represents an important step for us to apply the Electronic Postmark technology in securing email communications. This alliance exemplifies our solutions-based approach to commercializing the USPS EPM on a broad scale."

About AuthentiDate Holding Corp.

AuthentiDate Holding Corp. (AHC) is a worldwide provider of content authentication technology, a growing sector of the security software market. The Company provides secure document management solutions, enterprise network security products and services, and enterprise workflow management solutions that incorporate its proprietary authentication technology. AuthentiDate's offerings include the United States Postal Service Electronic Postmark Service (USPS EPM), electronic signing solutions, electronic forms processing solutions, document imaging software, and professional services related to the above.

About Kodak's Health Group

Kodak's Health Group, with 2004 revenues of $2.68 billion, is a world leader in supplying the medical and dental professions with advanced healthcare products, services and information technology (IT) solutions. Its broad product portfolio includes picture archiving and communications systems (PACS), radiology information systems (RIS), enterprise and departmental healthcare information systems, computed radiography (CR) and digital radiography (DR) systems, laser imagers, mammography systems, x-ray film systems for general radiography, and dental imaging products. Its broad services portfolio includes everything from repair and maintenance, to professional services encompassing equipment integration, business consulting, storage and archiving, secure e-mail services - and more.

Kodak's Health Group and Eastman Kodak Company's (NYSE: EK) other major businesses: Graphic Communications - offering on-demand color and black and white printing, wide-format inkjet printing, high-speed, high-volume continuous inkjet printing, as well as document scanning, archiving and multi-vendor IT services; Digital & Film Imaging Systems - providing consumers, professionals and cinematographers with digital and traditional products and services; and Display & Components - which designs and manufactures state-of-the-art organic light-emitting diode displays as well as other specialty materials, and delivers imaging sensors to original equipment manufacturers--together are committed to a digitally oriented growth strategy.

This press release contains forward-looking statements within the meaning of section 27A of the Securities Act of 1933 and section 21E of the Securities Act of 1934. When used in this release, the words "believe," "anticipate," "think," "intend," "plan," "will be," "expect," and similar expressions identify such forward-looking statements. Such statements regarding future events and/or the future financial performance of AHC or Kodak (the "Company") are subject to certain risks and uncertainties, which could cause actual events or the actual future results of the Company to differ materially from any forward-looking statement. Such risks and uncertainties include, among other things, the availability of any needed financing, the Company's ability to implement its business plan for various applications of its technologies, the impact of competition, the management of growth, and the other risks and uncertainties that may be detailed from time to time in the Company's reports filed with the Securities and Exchange Commission. In light of the significant risks and uncertainties inherent in the forward-looking statements included herein, the inclusion of such statements should not be regarded as a representation by the Company or any other person that the objectives and plans of the Company will be achieved.