Free-Space Holographic Barcode Targets for Private Authentication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing authentication systems with physical targets occupy significant space, obstruct foot traffic, reduce throughput, and compromise security and privacy due to wide viewing angles, making them difficult to use and limiting their feasible locations.
Innovation Solution
Utilization of a holographic barcode target generator to project a holographic target in free space, visible only within a predetermined viewing angle, enhancing security and privacy while allowing easy user access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a physical authentication target is used, then the authentication system can function properly, but it occupies significant space and obstructs foot traffic
Solution Approach 1:
The patent uses a holographic target that creates a virtual image in free space instead of a physical target. The hologram generator produces light fields that form an authenticatable image without requiring physical space occupation, thus resolving the contradiction between maintaining authentication function and reducing space occupation.
Solution Approach 2:
The patent replaces the mechanical/physical target system with an optical field-based holographic system. By using light fields and holographic interference patterns instead of physical objects, the system maintains authentication reliability while eliminating the space occupation problem.
2Reliability
If a physical authentication target is used, then the authentication system can function properly, but it reduces throughput in high-traffic environments
Solution Approach 1:
The holographic target creates a virtual authentication interface that users can interact with without physical contact or close proximity requirements. This virtual interface maintains authentication reliability while allowing faster user passage, thus improving throughput in high-traffic environments.
3Reliability
If a physical authentication target is used, then the authentication system can function properly, but it compromises security and privacy due to wide viewing angles
Solution Approach 1:
The holographic target system provides different viewing characteristics for different users. The authentication image is visible to the user at the correct viewing angle while remaining invisible or distorted for others, thus providing localized visibility that maintains authentication function while enhancing security and privacy.
Solution Approach 2:
The holographic target utilizes optical properties including viewing angle-dependent visibility and potential color/phase changes based on observation angle. This allows the authentication image to be selectively visible only to authorized users at specific angles, resolving the contradiction between authentication function and security.
4Reliability
If a physical authentication target is used, then the authentication system can function properly, but it makes the system difficult to use and limits feasible locations
Solution Approach 1:
The holographic target creates a virtual authentication interface that can be positioned in free space without requiring physical mounting surfaces or specific installation locations. This makes the system easier to use and adaptable to various locations, resolving the contradiction between authentication function and ease of operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The holographic target system improves user experience, increases throughput, and enhances security by reducing the visible footprint, making it suitable for high-traffic environments.
Implementation Method 1
a hologram generator (220) configured to generate a holographic target (221) visible within a predetermined viewing field of view (FOV) (222)
Implementation Method 2
The holographic target system improves user experience, increases throughput, and enhances security by reducing the visible footprint
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Authentication systems, devices, and methods are provided, which may use a scanner configured to capture an image of an authentication pattern in a predetermined target area; and a hologram generator configured to project a holographic target onto free space in the target area. Moreover, there may be provided a controller configured to process the image and output a determination of whether the authentication pattern meets a predetermined criterion.