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NCJ Number: 251053 Find in a Library
Title: If Contraband Cellphones Make it Into a Facility, Managed Access Systems Can Prevent Their Use
Corporate Author: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Date Published: July 2017
Page Count: 2
Sponsoring Agency: National Institute of Justice (NIJ)
Washington, DC 20531
Sale Source: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
810 Seventh Street NW
Washington, DC 20531
United States of America
Document: HTML
Type: Report (Technical Assistance); Report (Technical)
Format: Document; Document (Online)
Language: English
Country: United States of America
Annotation: Based on two NIJ-funded reports on the use of managed access technology in the Mississippi State Penitentiary and the Baltimore City jail complex (Maryland), this article explains how such systems can prevent inmate use of cell phones that enter the facility as contraband.
Abstract: Rather than relying on methods for keeping contraband phones out of a facility, managed access systems can keep such phones from being used. These systems allow phone calls from approved phone numbers and block calls to and from devices or numbers not approved by facility staff. Unlike jamming, managed access denies service to a select group of users. A managed access signal presents as an extension of nearby commercial cellular networks, allowing it to capture transmissions from cellular user devices. Once captured, unique identifying information is compared against a list of known authorized devices, and only transmissions from devices on this “white list” can be made. On the other hand, the technology is unable to stop the use of WiFi to access the internet. A managed access system requires FCC approval and carrier consent for deployment; and it has the potential to cause interference outside of the prison or to adjacent bands unless properly designed. Loss of the ability to make calls or send text messages on contraband phones has the potential to reduce inmate demand for them.
Main Term(s): Corrections Technology
Index Term(s): Cell Phones; Facility security; Prison contraband; Security management; Security surveillance systems; Security systems; Telephone communications
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