More than 80% Electronic Signed Invoices in the First Year
Tool manufacturer Precitool trusts in Authentidate signature technology

DÜSSELDORF, Germany
April 22, 2008

Tool manufacturer Precitool is making use of Authentidate signature products and services for its electronic billing system. The medium-sized company with 350 employees decided to introduce electronic billing to reduce the costs of sending out invoices while speeding up the billing process.

The tool manufacturer has already converted more than 80 % of its invoice recipients to the electronic alternative in the first year after introducing Authentidate signature technology.

"The changeover went quickly and without complications, both on our part and on the part of our invoice recipients," says Erwin Summerer, Managing Director of Precitool. "This is particularly because we also incorporated a solution for easy signature verification from Authentidate at the same time as we introduced our signature solution."

For this purpose, Precitool is making use of the Authentidate Signature Check Webservice  (www.signature-check.com). The Webservice enables invoice recipients to verify the signature without any additional software. And the service costs the invoice recipients nothing whatever, is available 24/7 all over the world and at the same time considerably enhances the willingness to accept the new electronic billing system.

Since Precitool also serves customers abroad, including fifteen European countries, one basic requirement was that the signature solution also meet international requirements. This is ensured by the Authentidate signature solution, which has already been put to the test by other companies for years.

What is more, the Signature Check Webservice fulfills international requirements in an especially user-friendly way. For instance, the signature is also available to all users in French or English. The results of the verification process are provided in the respective language. Hence the verification records can be archived in a national language. Five additional languages are available on request.

"We are very happy that Precitool has successfully implemented the conversion from pa-per to electronic billing using the internationally tested Authentidate eBilling signature solu-tion. This shows perfectly clearly that the electronic signed invoice can be put to use quickly and pragmatically by medium-sized companies, as well, and thus substantially help them cut down on costs," says Jan C. Wendenburg, Chief Executive Officer of Authentidate International AG.

Another reason why Authentidate signature products are so easy to introduce is that they can be integrated very flexibly. For example, the signed invoices can be sent to recipients by e-mail or downloaded from a portal. Thus this system is also very user friendly.

The next step Precitool is planning is to convert invoice receipts to the electronic signed form as well.

About Precitool
PRECITOOL Werkzeughandel GmbH & Co. KG stands for 28 strong partners all over Germany and 15 partner companies in Europe connected by a modern distribution- and service-center in Neuenstein. All German partners are Sandvik-Coromant distributors with 350 employees, of which 180 are technical consultants and application engineers.

With its 32 subsidiaries in Germany, the PRECITOOL group is represented all over the country and hence reaches any customer within 24 hours. 25.000 articles of 70.000 cataloged are stored in the PRECITOOL distribution center in Neuenstein. The merchandise management holds 250.000 articles in store ready for order. With a supply availability of constantly over 98%, more than 1.200 sendings are shipped at the location every day.

About Authentidate International AG & Authentidate Deutschland GmbH
Authentidate is the inventor of the qualified mass signature and one of the leading international providers of software and services for optimizing business processes based on electronic signatures and time stamps. Authentidate products and services comply with the strict requirements of the German Digital Signature Act and EU Signature Directive.

Authentidate signature technology is the world's only technology of its kind. The legally compliant SOA and SAAS architecture, which can be used on any platform, is the first to enable client-server signature processes and cover all current and future cards and standards, such as BSI eCard API, eHealth/eGK formats and processes, ERS and long-term archiving. Many software, archive and DMS providers have integrated Authentidate signature products as standard.

Since 2001, Authentidate has been an accredited provider confirmed according to the Digital Signature Act for qualified electronic time stamps, which are required for re-signing signatures.

Authentidate is headquartered in the USA and is today the sole supplier of the United States Postal Service® Electronic Postmark® (USPS® EPM®), a unique service for secure electronic communication in the USA. Authentidate Holding Corp. is listed on the (Nasdaq: ADAT) and at German stock markets (Security Identification Code 893715).

About Authentidate Holding Corp.
Authentidate Holding Corp. is a worldwide provider of secure workflow management software and web-based services. The company's automated and trusted workflow solutions enable enterprises and office professionals to employ rules-based electronic forms, intelligent routing and transaction management, electronic signing, content authentication, identity credentialing and verification and web and fax based communication capabilities. Customer benefits from the company's offerings include reduced costs, improved productivity and service levels, automated audit trails, enhanced compliance with regulatory requirements and the reduction of paper-based processes. The company has offices in the United States and Germany. In the United States we offer our patent pending content authentication technology in the form of the United States Postal Service® Electronic Postmark® (EPM).

For more information, visit the company's website at http://www.authentidate.com/

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 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, related decisions by the USPS, 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.

Authentidate is a registered trademark of Authentidate Holding Corp. Inscrybe and MyInscrybe are trademarks of Authentidate Holding Corp. All other trade names are the property of their respective owners.