Device Lifecycle Distributed Ledger for RMA Verification
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Solution Overview
Problem
It is challenging for device manufacturers to verify the authenticity and integrity of devices after they leave the manufacturing facility, particularly due to increasing network connectivity and the risk of device compromise, which can lead to costly and time-consuming return processes.
Innovation Solution
A distributed ledger system is implemented to document a device's lifecycle, including component manufacture, device assembly, delivery, usage, and end-of-life, through attestation and command transactions, providing an immutable record of the device's status and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a device is returned to a manufacturer for security verification, then device authenticity can be confirmed, but the process becomes costly and time-consuming
Solution Approach 1:
The patent implements preliminary action by recording device attestation information (authenticity, integrity status) on a distributed ledger before the device leaves the manufacturing facility. This pre-recorded information is then readily accessible during RMA processes, eliminating the need for time-consuming re-verification and allowing immediate authentication of returned devices.
Solution Approach 2:
The patent introduces a distributed ledger as an intermediary between the manufacturer and returned devices. The ledger stores and provides access to device attestation information, serving as a trusted mediator that enables quick verification without requiring the physical return of devices to manufacturing facilities for authentication.
2Loss of information
If devices are tracked through manufacturing and delivery, then device provenance is established, but the system complexity increases
Solution Approach 1:
The patent applies universality by using a distributed ledger that serves multiple functions: tracking device provenance, storing attestation information, recording integrity status, and enabling RMA verification. This single multi-functional system replaces what would otherwise require multiple separate tracking and verification systems, managing complexity through consolidation rather than proliferation.
3Reliability
If warranty status is verified through RMA processes, then device warranty validity is confirmed, but the verification process becomes difficult and lengthy
Solution Approach 1:
The patent implements feedback by continuously recording device status information (warranty eligibility, integrity status) on the distributed ledger as events occur during the device lifecycle. When a device is returned, the system immediately queries the ledger for current status information, providing real-time feedback on warranty validity without requiring lengthy manual verification processes.
Data Source
AI summary
A distributed ledger is used by one or more parties executing a ledger node to document a lifecycle of a device. When devices are manufactured, shipped, and used, attestation transactions are recorded to the distributed ledger that identify the devices and include attestation information about the device. The distributed ledger further supports command transactions that are used to change the behavior of the device, such as unlocking capabilities on the device. The distributed ledger provides a history of device attestation and activation.