Multi-Factor Location Verification for Offender Monitoring
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Solution Overview
Problem
Existing monitoring systems for offenders, defendants, or potential victims often face challenges in accurately tracking individuals due to issues like GPS drift, device failure, and tampering, which can lead to false alarms and reduced confidence in supervision.
Innovation Solution
The use of multiple tamperproof tracking devices equipped with GPS and WiFi capabilities, allowing for independent tracking and active wireless communication between devices, such as Bluetooth®, to enhance location accuracy and redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple tracking devices are used, then reliability and location accuracy are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple tracking devices (GPS device and secondary device) into a unified monitoring system where both devices track the same individual and communicate with a central server. The server merges location data from both devices to provide redundant verification, resolving the contradiction by achieving improved reliability through combination while managing complexity through centralized processing.
Solution Approach 2:
The central server acts as an intermediary that receives location data from multiple tracking devices, processes the information, and determines compliance. This intermediary manages the complexity of handling multiple devices by centralizing the data processing and decision-making logic, allowing the system to achieve high reliability without distributing complex processing across multiple endpoints.
2Measurement precision
If multiple tracking devices are used, then measurement precision of location is improved, but loss of information increases
Solution Approach 1:
The system uses feedback mechanisms where the server receives location data from multiple devices, compares the information, and determines whether locations match within a threshold. This feedback loop allows the system to verify location accuracy through multiple data sources while managing information overhead by only processing discrepancies when locations diverge beyond acceptable parameters.
3Reliability
If tamperproof devices are used, then reliability is improved, but ease of manufacture decreases
Solution Approach 1:
The patent divides the monitoring system into separate functional components: GPS tracking devices, secondary communication devices, and a central server. Each component can be manufactured independently with standardized tamperproof features, allowing specialized manufacturers to focus on specific functions. This segmentation improves reliability through specialized design while maintaining ease of manufacture through modular production.
Data Source
AI summary
A method and system for monitoring an offender or defendant or potential victim utilizing multi-factor location verification. In one embodiment, the multi-factor location verification method and system utilizes GPS location data and WiFi router location data, transmitted on predetermined intervals by an ankle bracelet and wristwatch tamperproof GPS/WiFi tracking device to determine whether the two devices are within a predetermined geolocation. If it is determined in subsequent transmissions of location data that not all location data is within the predetermined geolocation, an alert is sent out indicating that an offender or defendant or potential victim is no longer located within the predetermined geolocation.