Portable Palm Biometric Capture via Display Outline Alignment
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Solution Overview
Problem
Existing palm biometric data capture devices are large, cumbersome, and not portable, making them inconvenient and expensive for the general public, and they struggle to capture reliable data from hands positioned freely in space due to varying orientations and angles.
Innovation Solution
A method and system that uses a portable device to display an outline image of a palm, allowing users to align their palm with the image on a display, and then capture biometric data when aligned, facilitating accurate authentication by generating and using outline images to align and process palm biometric data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a platen-based palm biometric capture device is used, then palm biometric data can be captured with known orientation and position, but the device becomes large, cumbersome, and non-portable
Solution Approach 1:
The patent replaces the mechanical platen-based positioning system with a digital display-based guidance system. Instead of physically constraining the hand on a platen, the system uses a display screen to show a target palm outline that guides the user to position their hand correctly, eliminating the need for bulky mechanical positioning mechanisms.
Solution Approach 2:
The patent creates a virtual copy of the palm outline on the display screen to guide hand positioning. This digital outline serves as a template that users can align their actual palm with, replacing the need for physical templates or mechanical guides, thereby reducing device size while maintaining positioning accuracy.
2Measurement precision
If a platen-based palm biometric capture device is used, then palm placement can be controlled, but the device becomes expensive and less accessible to the general public
Solution Approach 1:
The patent replaces expensive, complex mechanical platen devices with inexpensive portable devices like smartphones or tablets. These consumer electronics are already affordable and widely accessible, eliminating the need for users to purchase or access specialized expensive biometric capture equipment while maintaining sufficient accuracy for authentication.
Solution Approach 2:
The patent makes the palm capture capability universal by implementing it on standard portable devices that everyone already owns. The same smartphone or tablet used for calls and messages can also perform biometric authentication, eliminating the need for separate expensive dedicated devices and making the technology accessible to the general public.
3Ease of operation
If palm biometric data is captured from a hand positioned freely in space, then device portability is improved, but the varying orientations and angles result in unreliable biometric data
Solution Approach 1:
The patent implements a feedback mechanism where the display screen shows a target palm outline that provides real-time visual guidance to the user. As the user positions their hand, they can see how it aligns with the outline, allowing them to adjust their hand position to achieve the correct orientation and angle, thereby ensuring reliable biometric data capture while maintaining freedom of movement.
Solution Approach 2:
The patent transforms the static platen positioning system into a dynamic interactive system. Instead of fixed mechanical constraints, the system dynamically adjusts and displays the target outline on the screen, allowing users to freely move their hands while receiving real-time visual feedback to achieve proper alignment, combining flexibility with positioning accuracy.
4Ease of operation
If palm biometric data is captured from a hand positioned freely in space, then device portability is improved, but folds and curves in the palm cause varying palm features at different times
Solution Approach 1:
The patent performs a preliminary action by displaying the target palm outline on the screen before actual data capture. This pre-guidance allows users to position their hand correctly in advance, ensuring that when the capture occurs, the palm is in the optimal position and orientation, minimizing the effect of folds and curves and ensuring consistent feature capture.
Solution Approach 2:
The patent addresses the variability caused by folds and curves by allowing users to adjust the capture parameters or retry the measurement until optimal palm positioning is achieved. The system can modify capture settings based on detected hand position and orientation, ensuring consistent biometric data quality despite variations in palm anatomy.
Data Source
AI summary
A method of capturing biometric data is provided that includes activating a security application in a device. The security application is activated by an operator of the device and is configured to cause the device to display an outline image. Moreover, the method includes displaying the outline image in a stationary position on a display of the device, positioning desired biometric data proximate the device such that the desired biometric data appears as a biometric image on the device display, and monitoring the outline and biometric images shown on the device display. Furthermore, the method includes positioning the device and the desired biometric data to better align the outline and biometric images when the outline and biometric images do not align and capturing the desired biometric data from an individual after approximately aligning the outline image with the biometric image.