Contraband Detection via Mobile Device Simulation
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Solution Overview
Problem
Correctional facilities face challenges in detecting and controlling contraband cellular devices due to their small size, which can evade conventional search methods, and existing jamming technologies interfere with public cellular use.
Innovation Solution
A system and method utilizing mobile devices and a contraband monitoring center to detect and monitor contraband devices by simulating a cellular tower, gathering information, and transmitting jamming signals to prevent unauthorized communications, while ensuring authorized communications remain unaffected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional search techniques (walk through metal detectors, manual searches, pat-down searches) are used to detect contraband devices, then the search process is simple and non-intrusive, but small cellular devices can evade detection
Solution Approach 1:
The patent replaces mechanical search techniques (metal detectors, manual searches) with an electronic/digital detection system. The system uses a portable electronic device with a processor that actively scans for cellular devices by analyzing radio frequency signals and device identifiers, substituting physical search methods with electromagnetic field detection and digital signal processing.
Solution Approach 2:
The portable electronic device acts as an intermediary between security personnel and potential contraband devices. It autonomously performs detection, analysis, and identification functions, serving as a mediator that translates complex radio frequency signals into actionable security information without requiring direct human interaction with each search target.
2Reliability
If jamming devices are used to prevent unauthorized cellular communications, then contraband device use is blocked, but public cellular service is interfered with
Solution Approach 1:
The system extracts only the necessary security function from broad-spectrum jamming technology. Instead of blocking all cellular communications in an area, the portable device targets and identifies specific unauthorized devices by analyzing their unique identifiers and signal characteristics, extracting only the contraband device signals for intervention while leaving public cellular service unaffected.
Solution Approach 2:
The detection and jamming function is applied locally and selectively rather than universally. The portable electronic device operates in close proximity to suspected contraband devices, providing targeted interference only when and where unauthorized devices are detected, rather than creating a blanket jamming zone that would affect all cellular service in the area.
3Reliability
If managed access devices (e.g., Stingray surveillance device) are used to monitor communications, then control over communications is maintained, but public cellular use is disrupted
Solution Approach 1:
The system performs partial monitoring rather than comprehensive surveillance. It selectively identifies and monitors only those devices that match contraband criteria (unauthorized identifiers, suspicious communication patterns) while allowing normal cellular communications to proceed uninterrupted, applying monitoring action only where necessary for security purposes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively detects and intervenes in unauthorized cellular device use within correctional facilities, maintaining security without interfering with public cellular services.
Implementation Method 1
The mobile device is configured to transmit an RF signal to gather information from the contraband device
Implementation Method 2
transmitting a jamming signal to prevent unauthorized communications
Data Source
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AI summary
The present disclosure provides details of a system and method for detecting and monitoring a contraband device including communication devices by utilizing a combination of mobile devices, fixed monitoring devices, and a contraband monitoring center. The mobile devices include smart phones or tablets that are borrowed, rented, or purchased by an inmate from a correctional facility. These mobile devices are configured to detect, monitor, and intervene in the communications of target devices. Further, the mobile devices are configured to communicate with fixed monitoring devices located throughout the correctional facility in performing intervention operations. The contraband monitoring center may also be utilized in the coordination, monitoring, and intervention of target devices.