Identity Recognition via UWB Distance and Direction
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Solution Overview
Problem
Existing identity recognition technologies face challenges in providing secure, efficient, and user-friendly solutions, particularly in environments where light conditions are poor or user cooperation is required, and they lack precise distance and direction-based authentication.
Innovation Solution
The method involves establishing a connection with a second device when it enters a preset distance range and performing identity authentication, determining user authority based on both distance and direction within specific ranges, using UWB modules for precise positioning, and exchanging keys for secure authentication, allowing for multiple user authority confirmations without relying on light or user activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional vision-based recognition (face recognition, gesture recognition) is used, then recognition can be performed, but it depends on light conditions and requires active user cooperation
Solution Approach 1:
The patent replaces vision-based optical recognition mechanisms with UWB (Ultra-Wideband) radio frequency positioning and RFID-like proximity detection mechanisms. This substitution eliminates dependency on light conditions, allowing recognition to function in complete darkness while maintaining the ability to detect device presence, calculate distance, and verify identity through wireless communication.
2Object-affected harmful factors
If passive recognition devices (RFID, NFC, fingerprint, iris) are used, then recognition can occur without light, but they require the recognized object to bring the device or biometric feature close to the recognition device
Solution Approach 1:
The system performs autonomous recognition without requiring active user cooperation. The first device automatically detects the second device's entry into the first distance range, establishes connections, performs identity authentication, and determines user authority all without requiring the user to manually present biometric features or activate recognition modes. The system serves itself by autonomously initiating and completing the recognition process.
Solution Approach 2:
The system establishes connections and performs preliminary identity authentication when the second device enters the first distance range, before requiring the device to enter the second distance range for final authority confirmation. This preliminary action reduces the burden on the user by starting the recognition process in advance as the device approaches.
3Productivity
If simple distance-based recognition is used, then recognition is fast and simple, but it lacks sufficient security and precision
Solution Approach 1:
The patent segments the recognition process into distinct stages: (1) detecting entry into the first distance range and establishing connections, (2) performing identity authentication, and (3) determining user authority upon entering the second distance range. This segmentation allows each stage to be optimized independently, maintaining speed while enhancing security through multiple verification steps.
Solution Approach 2:
The system transitions from simple distance-based recognition to three-dimensional spatial awareness by incorporating direction range detection. The determination of user authority requires both distance (second distance range) and directional positioning, adding a dimensional layer of security that prevents unauthorized access from unintended directions while maintaining recognition efficiency.
Data Source
AI summary
An identity recognition method includes: establishing, by a first device, a connection with a second device in response to detecting that the second device enters a preset first distance range; performing identity authentication on the second device based on the connection; and determining that the second device is a device with a preset user authority in response to determining that the identity authentication is passed and detecting that the second device enters a preset second distance range and the second device is within a preset direction range of the first device; herein the preset second distance range is within the preset first distance range.