Vehicle Valet Passcode Flow for Secure One-Handed Access
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Solution Overview
Problem
Existing valet modes in vehicles face issues such as limited keycode security, two-handed operations for keycode entry, conflicts with passive entry systems, and conflicts with secure idle mode, leading to potential unauthorized vehicle access and inconvenience.
Innovation Solution
The enhanced valet mode system generates unique, encrypted keycodes for vehicle access and ignition using a mobile device, integrates with existing door keypad systems, and modifies secure idle mode to allow one-handed operation and prevent unauthorized access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple keycodes are generated for valet access and ignition, then security is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The system segments the keycode functionality into two distinct interfaces: a door keypad for access authorization and an HMI for ignition authorization. This segmentation allows each interface to be optimized independently - the door keypad uses shorter codes suitable for quick entry, while the HMI can handle longer, more secure codes, thereby maintaining security while improving ease of operation.
Solution Approach 2:
The system introduces an intermediary mechanism that manages multiple keycodes across different interfaces. The door keycode serves as an intermediary that grants access to the vehicle, while the HMI keycode serves as a separate intermediary for ignition. This intermediary approach allows the system to maintain multiple security layers without requiring the user to manage all codes simultaneously, reducing operational complexity.
2Ease of operation
If shorter keycodes are used for door keypad compatibility, then ease of operation is improved, but security deteriorates
Solution Approach 1:
The security function is segmented between two different interfaces: the door keypad uses shorter codes for convenience, while the HMI uses longer codes for enhanced security. The ignition system requires both the door keycode entry and the HMI keycode, thereby maintaining strong security despite the shorter door codes.
Solution Approach 2:
Different security levels are applied to different locations/interfaces: the door keypad interface uses shorter, more convenient codes suitable for frequent access, while the HMI interface uses longer, more secure codes for the critical ignition function. This local quality differentiation optimizes both ease of operation and security at each specific interface.
3Ease of operation
If valet needs to record and enter keycodes with one hand, then mobility is improved, but measurement precision and reliability deteriorate
Solution Approach 1:
The keycode entry process is segmented into two separate steps at two different interfaces. The valet first enters the door keycode (shorter, easier to remember and enter) to gain access, then enters the HMI keycode (longer, more secure) for ignition. This segmentation reduces the cognitive load and physical difficulty compared to entering a single long code, improving one-handed operation capability while maintaining accuracy through the use of two separate, manageable code entries.
4Ease of operation
If passive entry and start systems are integrated with valet mode, then ease of operation is improved, but reliability deteriorates due to conflicts
Solution Approach 1:
The system extracts the passive entry and start functionality from the valet mode operation. When valet mode is active, the system disables or overrides the passive entry and start systems, preventing them from interfering with valet security. The valet must explicitly enter keycodes at both the door keypad and HMI, ensuring that passive systems cannot accidentally trigger vehicle access or ignition during valet operation.
Data Source
AI summary
Systems, methods, and computer-readable media are disclosed for an enhanced valet mode for vehicles. An example method may include receiving, by a vehicle, a request for a temporary valet passcode. The example method may also include determining, that a passive entry passive start (PEPS) key fob is not present inside the vehicle. The example method may also include presenting a request for a second passcode. The example method may also include determining that the second passcode has been input. The example method may also include determining that the second passcode matches a pre-established passcode that is stored in memory of the vehicle. The example method may also include generating, using an enhanced valet mode, a first temporary valet passcode based on the determination that the second passcode matches a pre-established passcode that is stored in the memory.