SIM Binding System for Multi-SIM Device Authentication
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Solution Overview
Problem
The ability of users to employ multiple SIM cards interchangeably in a single device complicates user authentication, as entities struggle to identify and authenticate users when they switch between different SIM cards, leading to inefficiencies and potential fraudulent activities.
Innovation Solution
A system that involves querying the mobile network carrier for carrier data associated with the device, comparing it to the user's profile, and updating the profile to bind the device to the user, regardless of the SIM card used, thereby enabling seamless authentication and risk evaluation across multiple SIMs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SIM cards are used interchangeably in a single device, then user versatility and device adaptability improve, but user authentication reliability deteriorates because entities cannot reliably identify and authenticate users when they switch between different SIM cards
Solution Approach 1:
The patent introduces a binding mechanism that acts as an intermediary between the device and the user profile. This binding associates the device identifier with the user profile independently of which SIM card is active, allowing authentication to proceed reliably even when SIM cards are switched. The binding serves as a mediator that decouples authentication from SIM card identity.
Solution Approach 2:
The patent separates the authentication process into two independent components: SIM card identification and device binding. By segmenting the authentication mechanism, the system can authenticate users based on device binding rather than SIM card identity, allowing SIM cards to be interchangeable while maintaining reliable user identification.
2Adaptability or versatility
If multiple SIM cards are used in a single device, then communication versatility improves, but the complexity of authentication processes increases due to the need to manage multiple SIM identities
Solution Approach 1:
The patent extracts the device binding information from the SIM card identity management. By taking out the device identifier and binding it independently to the user profile, the system removes the complexity of managing multiple SIM identities while maintaining communication versatility. The authentication process only needs to verify device binding, not SIM card identity.
3Measurement precision
If entities authenticate users based on SIM card information, then authentication precision improves, but the loss of user information occurs when users switch SIM cards as the entity cannot identify the user
Solution Approach 1:
The patent performs preliminary device binding before SIM card switching occurs. By establishing the device-user profile association in advance, the system ensures that user identification information is preserved and accessible regardless of which SIM card is currently active in the device.
Solution Approach 2:
The device binding acts as an intermediary that preserves user identification information independently of SIM card changes. This binding mechanism ensures that the entity can continuously identify and authenticate users even when SIM cards are switched, preventing loss of user information.
Data Source
AI summary
Subscriber identity modules can be bound to devices and utilized for authentication. An initial or additional subscriber identity module can be bound to a user device, for instance after successful user authentication by way of an alternate mechanism. A subscriber identity module of a device can be identified, and carrier data associated with the subscriber identity module can be requested and received. A determination can be made regarding whether the subscriber identity module is linked to the device, for instance by an original linkage. A user profile can be automatically updated with the carrier data to bind the user to the user device based on the subscriber identity module when the subscriber identity module is verified to be linked to the user device. Subsequently, the subscriber identity module can be utilized as a basis for authentication.