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G4S Justice Services, Inc. (G4S)

G4S Justice Services is dedicated to providing Government agencies with the most advanced and effective technology, excellent 24/7 customer service, round-the-clock monitoring/ call-center staff and the most affordable programs.  This focus has enabled G4S to become a leading information, technology, and services provider for electronic monitoring and tracking.

Located in Southern California, G4S Justice Services is a full service electronic monitoring service provider, using the latest electronic advances in Radio Frequency (RF), GPS, and Alcohol and Voice monitoring. G4S was the first company to introduce a web-based caseload management system, allowing officers to instantly view, evaluate and make changes to information they need to manage their caseload. This minute-by-minute information system has provided Government agencies with the most up to date information about the caseload they are supervising and has significantly reduced the amount of time they have to spend looking for information on specific cases. Through continual evaluations and upgrades to our systems, G4S Justice Services offers the most advanced, and user-friendly program on the market.

At G4S we understand and focus on the needs of our customers - the primary goal of G4S Justice Services is to provide accurate, timely, and reliable information. Our staff is expertly trained to process monitoring information, provide technical support, and perform remote diagnostics. Our staff provides customers with assurance that electronically monitored participants are under close, accurate supervision 24/7 thus enabling program officers to focus their emphasis on their casework. Officers are able to access their client information using any Internet-ready device to view caseloads, track locations, or change and update participant information and schedules.

Our customers consist of national, state, and local municipalities, private operators and government agencies. With over ten years' experience in electronic monitoring, our investment in robust technology, our experience and customer knowledge have made us one of the most reliable electronic monitoring companies in the industry.

G4S Justice Services is a wholly owned subsidiary of Group 4 Securicor, a global security solutions provider with operations in 100 countries, employing a staff of more than 340,000 and having annual revenues of approximately $7.4 billion.

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G4S Justice Service's Headquarters

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  • Headquarters located in
    Southern California

    30201 Aventura
    Rancho Santa Margarita
    California, 92688
    Toll Free 800.589.6003
    Fax Free 800.327.1178