ABM Data Systems, a Subsidiary of MDI Security Systems, Announces the Release of Latest Service Pack for Phoenix Alarm Automation Software.

SAN ANTONIO -- Latest Version Update Includes Key Features Such as Archive, Purge and Retrieval Capabilities

ABM(TM) Data Systems, the leading provider of central station automation for over two decades and a subsidiary of MDI Incorporated (NASDAQ:MDII), today announced that it has released the latest version of its Phoenix(R) central station enterprise alarm automation software. The Phoenix solution is designed to empower the security industry to take advantage of powerful client/server computing to support the creation of enterprise-wide information systems for Central Station automation.

The latest version of Phoenix (x.4.1.1) offers the most robust monitoring technology platform available and provides maximized value for its customers by delivering the following enhancements to its pioneering solution:

--  Critical Archive, Purging and Retrieval Capabilities

        --  Allows clients to easily archive, purge and retrieve their
            historical security information

    --  Site Level Processing

        --  Ability to combine signals from multiple panels into one
            event from a centralized console

        --  Enables users to copy or delete contact information to or
            from all panels from a site

    --  Advanced Search Menu for Alarm Processing

        --  Ability to cross reference and search the database for
            specified records

    --  Auto Event Dropping

        --  Safeguards against an event, critical or non-critical, not
            being processed within 30 seconds of alarm notification

"Over the past two decades ABM has delivered and designed innovative and customer centric, central monitoring technology," stated Tim Rohrbach, Vice President of Technology for MDI Security Systems. "With our latest service pack release of Phoenix, we gathered specific product requirements from our customer base of top Fortune 500 companies, in order to continue delivering state-of-the-art software that meets their demanding challenges in responding to critical events in real-time."

ABM's Phoenix software customers are some of the top Fortune 500 companies, financial institutions, system integrators and educational facilities across the country including, Bringham Young University, Caterpillar, City of New York, Lockheed Martin, Loreal, Merrill Lynch, Microsoft, Orange County Public School, Raytheon, Walt Disney, SBC and Fidelity Investments. For additional information on ABM(TM) Data Systems or to purchase the company's Phoenix(R) software solution please contact 800-767-7067 ext. 4201 or e-mail [e-mail].

About ABM Data Systems

Since 1982, ABM Data Systems has been leading the central station automation industry with its revolutionary line of centralized security event and alarm monitoring software. ABM's software solution enables DCC collected signals presented by a variety of receivers, then deciphers each signal into the appropriate information, and determines the nature and urgency of any required response. For more information on ABM Data Systems and its solutions visit www.abmdata.com.

About MDI Security Systems

For 25 years, MDI Security Systems has been securing clients across the globe by delivering the most dependable access control and integrated security management solutions available. As a security industry pioneer and technical thought leader, MDI continues to deliver value to its stakeholders through the development of market-driven, technically superior security systems that can be managed from a centralized point of control. By combining a quarter century of expertise with thousands of worldwide users from a variety of industries including financial, transportation, manufacturing, education, government, defense and homeland security, MDI is able to maintain the highest return on investment in the industry for its client base. For more information on MDI Security Systems and its solutions visit www.mdisecure.com.

Forward-Looking and Cautionary Statements

Except for historical information and discussions contained herein, certain statements included in this press release may constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These statements include a number of risks, uncertainties and other factors that could cause actual results to differ materially, as discussed in the Company's filings with the Securities and Exchange Commission.