Ergonomic Roller Fingerprint Capture with Anti-Fraud Barcodes
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Solution Overview
Problem
Current fingerprint capture methods, including ink-on-paper and electronic live-scanning, face challenges such as high rejection rates, inefficiency in capturing unique fingerprint patterns, interference from other fingers, and susceptibility to fraud, particularly in large-scale or group fingerprinting processes.
Innovation Solution
A fingerprinting device featuring a tubular ergonomic roller wrapped with fingerprint labels, allowing subjects to create high-quality rolled impressions without trained operators, combined with invisible machine-readable barcodes to prevent fraud, enabling simultaneous and secure fingerprint capture from multiple individuals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ink-on-paper type-4 fingerprint capture is used, then rolled fingerprints can be obtained to show more unique patterns, but the reject rate remains high at 20% due to smudging and distortion
Solution Approach 1:
The patent extracts the problematic element (other fingers interfering with the rolling process) by providing a physical barrier (barrier member) that isolates the selected finger from interference, allowing clean fingerprint rolling without smudging or distortion
Solution Approach 2:
The patent introduces an intermediary barrier member between the selected finger and other fingers that prevents direct contact and interference, enabling the finger to roll smoothly across the fingerprint medium without being obstructed by adjacent fingers
2Measurement precision
If electronic live-scanned fingerprint capture is used, then high-quality fingerprints can be obtained, but costly trained operators and expensive equipment are required
Solution Approach 1:
The patent enables subjects to perform their own fingerprint capture without requiring trained operators. The device is designed to be self-operating, where the subject simply places their finger on the medium and rolls it, eliminating the need for expensive trained personnel
Solution Approach 2:
The patent uses inexpensive, disposable fingerprint capture media instead of expensive electronic scanning equipment. The fingerprint medium can be discarded after use, eliminating the need for costly electronic devices while maintaining fingerprint quality
3Productivity
If group fingerprinting is attempted without proper constraints, then efficiency increases, but other fingers interfere causing smudging and distortion
Solution Approach 1:
The patent segments the fingerprint capture process by providing individual barrier members for each finger position. This segmentation allows multiple subjects to fingerprint simultaneously without interference between fingers, maintaining both efficiency and quality
Solution Approach 2:
The patent introduces barrier members as intermediaries between adjacent fingers during group fingerprinting. These barriers prevent fingers from interfering with each other while allowing the rolling motion to proceed smoothly, maintaining impression quality during efficient group processing
4Productivity
If standard fingerprint capture methods are used, then fingerprints can be obtained, but fraud through substitution is possible
Solution Approach 1:
The patent uses visible and invisible ink patterns that change or appear under specific conditions. The invisible ink becomes visible only under UV light or specific viewing angles, providing a security feature that prevents substitution fraud while maintaining normal fingerprint capture functionality
Solution Approach 2:
The patent creates a secure link between the fingerprint impression and the fingerprint medium through unique serial numbers and security features. This copying mechanism ensures that the fingerprint cannot be separated from its authentic medium, preventing substitution fraud
Data Source
AI summary
A device and method for allowing secure self-capture of multifold fingerprint impressions. The device includes a strip of fingerprint labels wrapped about a tubular ergonomic roller. A subject inserts the thumb of a first hand into the ergonomic roller and grips the roller between his thumb and forefinger. The subject then rolls the inked tip of a finger on his second hand across a label in a first rotational direction while rotating the ergonomic roller in an opposite rotational direction. To prevent fraudulent substitution of fingerprinting materials that are distributed to a subject, the materials are marked with machine readable invisible barcodes that are associated with a unique identification number. After a subject captures his fingerprints and submits his materials to a trusted observer, the barcodes on the materials are compared to the identification number to determine whether the materials submitted are in-fact those that were distributed to the subject.