Embedded Secure Element Subscription Transfer via External Identification Code
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Solution Overview
Problem
In non-removable universal integrated circuit card (UICC) ecosystems, there is a need to transfer network subscription information from an old device to a new one without a physical SIM card, requiring alternative methods to manage subscription changes during device replacement or repair, especially when devices are disconnected or powered off.
Innovation Solution
An electronic device with a non-removable secure element, such as an eUICC, uses a unique second device identification code linked to the first device identification code via a cryptographic function, readable by external equipment like QR or NFC readers, allowing for secure validation and subscription transfer even when the device is disconnected, enabling network subscription transfer and data management between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a non-removable secure element is used for network subscription, then device security and integration are improved, but the ability to transfer subscription during device replacement or repair deteriorates
Solution Approach 1:
The patent creates a digital copy of the subscription information by generating a second identification code that can be read externally when the device is off. This copy can be transferred to a new device, enabling subscription portability without physical SIM cards while maintaining security through cryptographic linking to the first identification code
Solution Approach 2:
The patent introduces an intermediary mechanism - a second identification code that serves as a bridge between the secure embedded subscription and external transfer operations. This intermediary can be read by external equipment without activating the device, enabling secure subscription transfer through authorized entities
2Adaptability or versatility
If direct connection between devices is used for subscription transfer, then physical SIM card requirements are eliminated, but complexity of transfer process increases
Solution Approach 1:
The patent extracts the essential subscription identification information into a separate, readable form (second identification code) that can be accessed without the device being powered on. This extraction simplifies the transfer process by separating the identification function from the device's operational state, allowing external reading through QR codes, NFC, or other interfaces
3Reliability
If device must be powered on for validation, then security validation can be performed, but usability during device replacement deteriorates
Solution Approach 1:
The patent performs preliminary action by generating and storing the second identification code in advance, in a state that can be read externally without device activation. This allows validation and subscription transfer to proceed before the device is powered on or even before the new device is fully set up, improving usability during replacement while maintaining security through cryptographic verification
Data Source
AI summary
An electronic device with a network subscription is provided. The device comprises an embedded secure element including a subscription identification code for identifying the subscriber, a unique public first device identification code and a unique second device identification code linked to the first code. The embedded secure element is one of a physical and virtual secure element, and the second device identification code can be read with external reader equipment when the device is disconnected from the network. Methods of transferring a network subscription and identifying an electronic device are also provided.