Harrah’s Entertainment Selects MDI’s SAFEnet Integrated Security and Systems Management Solution for Casino Security

SAN ANTONIO, TEXAS – May 18, 2005 – MDI Security Systems, the foundation of MDI, Inc. (NASDAQ: MDII), a recognized leader in delivering open integrated access control, alarm management and video security solutions, today announced that Harrah’s Entertainment, Inc., has selected their award-winning SAFEnet Solution to centrally, command and control their casino security operations.

Under the facilitation of ITI-Com.Seek, Inc. (Com.Seek), an MDI Security Solutions Partner, MDI’s SAFEnet integrated security management solution has been designated by Harrah’s corporate headquarters as a “Certified Access Control System” for their enterprise security operations. The MDI product line is currently the only security control solution in the industry to receive this prestigious certification from Harrah’s.

Com.Seek provides its customers with MDI products exclusively and will be the centrally designated design, sales and security integration facilitator for Harrah’s managed locations across the country.

Founded in 1937, Harrah’s is the largest casino operator in the world and the first choice in casino entertainment for millions of people. The company owns or manages through various subsidiaries 26 casinos across the country, primarily under the Harrah’s, Rio, Showboat, Horseshoe and Harvey’s brand names. Harrah’s has built its reputation through providing loyalty and value for their clients and stakeholders by being the most service oriented, and technology-driven company in the industry.

Throughout the various phases of the contract, MDI and their Security Solutions Partner Com.Seek will work together to integrate and automate all access control processes for the popular casino enterprise. With MDI’s comprehensive product line, including their ViewPointâ„? brand of security surveillance cameras and recorders and the nTEGRITYâ„? line of access control readers and biometrics, Com.Seek will ensure that they have the right solution to allow Harrah’s to identify, track and manage their security, as needed, from a scalable open systems integration platform in a networked environment.

“Com.Seek has maintained a history of success by providing our clients in the Petrochemical, Hospital, Gaming and Hospitality industries with MDI products exclusively,” stated Brian Ashley, Vice President for Com.Seek. “With that in mind, we chose to capitalize on this established success to protect Harrah’s clients, employees and assets while empowering their security team to maximize their internal resources and focus on pro-active incident prevention versus traditional reactive alarm response.” “Our partnership with MDI is designed to position Harrah’s to accomplish this,” he added.

About Com.Seek Solutions

International Testing and Inspection Services (ITI) has been developing specialized inspection and surveillance systems for the global petrochemical industry since 1983. With the expansion of the security systems market, ITI diversified its security position to pursue additional vertical markets including healthcare and gaming, by creating Com.Seek in 1999. Com.Seek provides integrated access control, alarm management and video security systems that provide customer value based on the corporate mindset of delivering “technically elegant solutions”. For more information on how Com.Seek can assist your organization in fulfilling its security initiatives, please call 504-392-7810 or email Brian Ashley directly at: brian@comseekinc.com.

About MDI Security Systems

For over 25 years, MDI (NASDAQ: MDII) has been protecting clients across the globe by manufacturing the most innovative and dependable integrated security management solutions available. As a security industry pioneer and recognized leader in advanced security research, MDI continues to deliver value to its stakeholders through the development of market-driven, technically superior integrated security systems that can be comprehensively managed from a centralized point of command, contain and control. The MDI product family currently protects thousands of customers around the world including many of the world’s most secure government facilities, financial institutions, healthcare organizations, manufacturing companies, energy and power providers, gaming and entertainment establishments, educational institutions and Fortune-ranked corporations. For more information on MDI Security Systems including its SAFEnet, iTRUST, ViewPoint and nTEGRITY product lines, please 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.

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