Cross-Device Account Sharing via NFC for Secure Login Transfer
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Solution Overview
Problem
Users face difficulties in remembering multiple account and login password combinations across devices, especially on devices with limited input capabilities, leading to inconvenience and security risks.
Innovation Solution
An account data sharing method that allows a first device to share login information with another device through user-initiated operations, without requiring client or server modifications, using package names for application identification and encryption for security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users manually enter account and login password for each application on each device, then information security is maintained, but user convenience deteriorates and operation complexity increases
Solution Approach 1:
The patent uses near field communication (NFC) technology to copy account information from a first electronic device to a second electronic device. The account data is transmitted wirelessly through NFC proximity contact, creating a duplicate of the login credentials on the target device without manual re-entry, thus resolving the contradiction between security and convenience
Solution Approach 2:
The patent introduces an NFC module as an intermediary mechanism between two electronic devices. This intermediary enables secure, proximity-based data transfer without requiring users to manually input account information or rely on less secure transmission methods, addressing both security concerns and operational ease
2Adaptability or versatility
If login information is transmitted through server, then centralized management is achieved, but information security deteriorates due to potential server-side theft
Solution Approach 1:
The patent extracts the account information transmission process from the server-based centralized management system and implements it through direct device-to-device NFC communication. By removing the server as an intermediary in the transmission path, the system eliminates server-side security vulnerabilities while maintaining the adaptability of account sharing across devices
Solution Approach 2:
The patent converts the potential harm of centralized server storage into a benefit by enabling distributed local storage through NFC. Instead of relying on a single point of failure (the server), account information is securely distributed to individual devices, transforming the security risk into enhanced reliability and security
3Productivity
If all application login information is shared automatically, then user convenience is improved, but information security deteriorates
Solution Approach 1:
The patent applies local quality by enabling selective account sharing through user confirmation. Instead of uniformly sharing all account information, the system allows users to choose which specific applications' login credentials to share, creating localized security zones where different levels of information sharing are applied based on user preferences
Solution Approach 2:
The patent incorporates feedback mechanisms through user confirmation prompts before sharing account information. The system requests explicit user authorization and provides feedback about what information will be shared, allowing users to control the sharing process and prevent unauthorized or accidental leakage of sensitive credentials
Data Source
AI summary
After a first device logs in to a first account in a first application, the first receives a first operation performed by a user on the first application. Login information of the first account includes the first account, or the first account and a login password of the first account. The first device displays, in response to the first operation, a first interface including one or more device options. Each device option corresponds to one wireless device found by the first device. The first device sends, in response to a selection operation performed by the user on a first device option on the first interface, identity information of the first application and the login information of the first account to a second device corresponding to the first device option.