The company's Defense Systems segment offers training systems and communications products comprising customized military range instrumentation systems, electro-optical systems, firearm simulation systems, communications and surveillance systems, surveillance receivers, power amplifiers, and avionics systems for intelligence, surveillance, and search and rescue markets. Its Transportation Systems segment provides electronic revenue collection systems, including contactless smart cards, passenger gates, central computer systems, and ticket vending machines for mass transit networks, such as rail systems, buses, and parking applications. This segment's solutions and services include system design, central computer systems, equipment design and manufacturing, device-level software, integration, test, installation, warranty, maintenance, computer hosting services, call center services, card management and distribution services, financial clearing and settlement, multi-application support, and outsourcing services. It also offers special technology components, such as smart card readers and magnetic ticket transports for use within its suite of fare collection equipment consisting of on-bus solutions, access control solutions, vending solutions, retail and card issuing solutions, and mobile inspection and sales solutions. This segment provides products and services for the U.S. and foreign governments; and large local government agencies in the U.S. and internationally.

The company was founded in 1949 and is headquartered in San Diego, California.

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