Electronic Key System Wireless Function Transfer
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Solution Overview
Problem
Conventional electronic key systems for rental cars and car sharing services face challenges when the primary user cannot return the vehicle, as the system requires physical transfer of the portable terminal, limiting remote operation and convenience.
Innovation Solution
An electronic key system that allows function transfer or copying between portable terminals without physical key exchange, using wireless transceivers and information processing units to securely manage and authenticate electronic key operations, enabling remote operation of locked objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the portable terminal is physically transferred to another person, then the electronic key function can be transferred, but the convenience and security of remote operation is reduced
Solution Approach 1:
The patent implements electronic key copying by generating a duplicate electronic key in the portable terminal's memory. When a user requests key transfer, the system creates a copy of the authentication credentials and transmits it wirelessly to the target terminal, eliminating the need for physical handover of the original device. This copying mechanism allows the original portable terminal to retain its functions while enabling remote operation through the copied key.
Solution Approach 2:
The patent replaces the mechanical/physical key transfer system with a wireless electronic transmission system. Instead of physically handing over the portable terminal or a physical key, the system uses wireless communication protocols to transmit authentication data between terminals. This substitution eliminates the need for physical contact and direct device handover, enabling remote key transfer operations.
2Adaptability or versatility
If the electronic key is copied to another portable terminal, then remote operation is enabled, but security risks may increase
Solution Approach 1:
The patent implements preliminary authentication and authorization actions before electronic key copying occurs. The system verifies the identity of the requesting user, confirms their authority to copy the key, and validates the target terminal's eligibility to receive the copied key. This preliminary action ensures that only authorized operations are performed, maintaining security while enabling legitimate remote operation capabilities.
Solution Approach 2:
The patent incorporates feedback mechanisms where the system continuously monitors and tracks the status of electronic key copies. The lock-side terminal receives authentication requests from terminals with copied keys and verifies them against the original key's permissions. This feedback loop ensures that copied keys maintain the same security constraints as the original, preventing unauthorized operations while enabling remote access.
Data Source
AI summary
An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.