Bluetooth Pairing Status Monitoring for Lost Device Tracking
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Solution Overview
Problem
Current methods for tracking lost mobile devices rely on continuous Internet and GPS connections, raising privacy concerns and being ineffective for devices without GPS capability, and they do not address the issue of preserving user anonymity.
Innovation Solution
A cloud-based tracking system using wireless communications, where a command device pairs with tracked devices via Bluetooth, and if the pairing is broken for a user-defined interval, the device broadcasts a distress packet with its ID and location, which is forwarded by an anonymous friendly device to a mobile device management server, allowing tracking without continuous connection and preserving user anonymity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous Internet and GPS connections are used for tracking, then tracking reliability is improved, but user privacy is compromised and energy consumption increases
Solution Approach 1:
The system uses periodic Bluetooth pairing checks between command device and tracked device instead of continuous monitoring. When pairing is lost, a timer counts up to a threshold before triggering distress packet transmission. This periodic verification maintains tracking reliability while significantly reducing energy consumption and privacy intrusion compared to continuous GPS/Internet tracking.
Solution Approach 2:
The patent introduces an intermediary distress packet transmission mechanism where tracked devices broadcast their status and location only when pairing is lost and timer threshold is reached. Anonymous friendly devices act as intermediaries to forward these distress packets to the server. This intermediary approach enables tracking without continuous connection, preserving user privacy while maintaining reliability for lost device detection.
2Measurement precision
If GPS capability is required for tracking, then location precision is improved, but device compatibility is reduced
Solution Approach 1:
The system is designed to work with both GPS-enabled and non-GPS devices. Tracked devices can include GPS capability for precise location tracking, but the system also functions with devices lacking GPS by using alternative location methods. The command device and server coordinate tracking efforts, allowing the system to adapt to different device capabilities and maintain broad compatibility across various mobile device types.
Solution Approach 2:
Anonymous friendly devices serve as intermediaries that can provide location information when tracked devices lack GPS capability. These friendly devices receive distress packets and forward them to the server, potentially contributing their own location data or relaying information that helps triangulate the lost device's position, thereby enabling tracking for devices without built-in GPS.
3Reliability
If continuous tracking is implemented, then tracking reliability is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic pairing verification between command device and tracked device using Bluetooth, replacing continuous GPS/Internet tracking. When pairing is maintained, minimal energy is consumed. When pairing is lost, a timer initiates periodic checks until threshold is reached, triggering distress packet transmission. This periodic action maintains tracking reliability while dramatically reducing energy consumption compared to continuous tracking.
Solution Approach 2:
The tracked device autonomously monitors its own pairing status with the command device and self-manages the distress packet transmission process. When pairing is lost and timer threshold is reached, the device automatically broadcasts its distress status and location without requiring continuous external power or intervention. This self-service mechanism reduces overall system energy consumption while maintaining reliable lost device detection.
Data Source
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AI summary
In an example implementation, a method of tracking a mobile device includes determining by a tracked device, that a pairing status between the tracked device and a command device has changed from a paired status to an unpaired status. A timer is started on the tracked device in response to determining the unpaired status, and in response to the timer reaching a threshold time, a distress packet is transmitted from the tracked device that indicates the tracked device is lost.