- Gillmore Security Systems, Inc.
 - Cleveland - Commercial and personal security services. - Grey Enterprises Inc.
- Akron - Locksmiths serving Northeast Ohio. Also sells and installs access control, video surveillance, and intercom systems.
- Identiphoto Company, Ltd.
- Willoughby - Specialising in sale and service of photo-based and electronic identification systems, ID supplies, and ID badges.
- National School Safety and Security Services
- Cleveland - Providing answers to frequently asked questions by school and youth officials about school security and gangs.
- Nationwide Protective Service, Inc.
- Cleveland - Provides off-duty police, bodyguards, security guards, and patrol service to all concerts, special events, businesses, buildings, and more.
- NewMarket Solutions, Inc.
- Twinsburg - Specialises in ID applications, video ID badging systems, and cardless biometric technology.
- Relco Sales Company
- Solon - Manufacturers agent and distributor of covert audio and video equipment, closed circuit video, two-way radio equipment, tyre deflation devices and more.
- Scharles & Associates
- Elyria - Offers residential, commercial, and personal security.
- Security Alarm Data Corp (SADC)
- Parma - Installation and monitoring company. Specialists in outdoor security.
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