RFID Tag Hardware Verification for Mobile Device Integrity
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Solution Overview
Problem
The challenge lies in verifying the original hardware configuration of user-configurable mobile devices to prevent unauthorized changes and maintain warranty and service integrity, as users can swap out components, leading to potential damage and increased costs for manufacturers.
Innovation Solution
Implementing an RFID tag to store encrypted build information, which is compared to the current hardware configuration upon boot-up, allowing the device to operate with restricted functionality if changes are detected, ensuring only authorized components are used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users are allowed to configure and swap hardware components for customization, then adaptability and user choice are improved, but hardware integrity and warranty protection deteriorate
Solution Approach 1:
The patent applies preliminary action by storing the original hardware configuration information in an RFID tag during the device manufacturing process, before the user can swap any components. This pre-stored information serves as a reference for later verification, enabling the system to detect unauthorized hardware changes while still allowing legitimate user customization.
2Ease of operation
If hardware components can be easily swapped by users, then ease of operation is improved, but device complexity and verification requirements worsen
Solution Approach 1:
The patent introduces an RFID tag as an intermediary component that stores hardware configuration information. This intermediary enables automatic verification of hardware integrity without adding significant complexity to the user interface or operation flow. The bootloader acts as another intermediary that mediates between the hardware components and the operating system, enforcing security policies based on RFID-stored information.
3Adaptability or versatility
If memory can be unplugged and swapped for lower-capacity memory, then adaptability is improved, but information retention and system stability worsen
Solution Approach 1:
The patent extracts the critical hardware configuration information and stores it in the RFID tag, separate from the swapable memory components. This extraction ensures that even if memory is removed or replaced, the authoritative hardware configuration information remains intact in the RFID tag, preventing loss of boot image and system configuration data.
4Reliability
If hardware verification is implemented to prevent unauthorized changes, then reliability is improved, but device complexity and manufacturing cost worsen
Solution Approach 1:
The patent implements self-service by enabling the bootloader to automatically verify hardware configuration against RFID-stored information during the device startup process, without requiring user intervention or external verification systems. The system self-regulates by automatically detecting unauthorized hardware changes and responding appropriately, reducing the need for complex external verification infrastructure.
Data Source
AI summary
In embodiments of hardware verification with RFID-stored build information, a device includes hardware components and a wireless radio tag to store build information for hardware verification of the hardware components in the device. A bootloader can interrogate the wireless radio tag to obtain the build information and compare the build information to current information of the hardware components in the device. The bootloader can then determine whether the current information matches the build information. If the current information does not match the build information, then the build information for the hardware components can be stored in the wireless radio tag, and functionality of the hardware components in the device is limited.