Work

Carbon Nanotube-Enhanced Silicone Fingerprint Replicas for Biometric Security Testing

Year: 2025

Type: article

Abstract: Biometric authentication systems, including fingerprint readers, are widely used in mobile devices but remain vulnerable to spoofing attacks. This paper evaluates the properties of carbon nanotube (CNT)-modified silicone fingerprint replicas for use in security testing. Microscopic analyses, roughness measurements, and electrical conductivity measurements showed that the effectiveness of the replicas depends on the type of silicone matrix and the concentration of CNTs. Replicas made with Double 32 at 3% CNT exceeded the percolation threshold, achieving significantly higher conductivity. In practical tests, capacitive scanners proved susceptible to recording artificial prints, while ultrasonic readers were more resistant. The results indicate that although CNTs improve the properties of replicas, their ability to reproduce higher-order features remains limited.

Source: Applied Sciences

DOI: 10.3390/app152111539

Authors: Eliza Romanczuk-Ruszuk, Anastazja Orlow, Bogna Sztorch, Kamil Dydek, Bartłomiej Przybyszewski, Robert E. Przekop

Institutions: Bialystok University of Technology, Adam Mickiewicz University in Poznań, Warsaw University of Technology

Language: English

Topic: Biometric Identification and Security

Subfield: Signal Processing

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Ministry of Science and Higher Education of the Russian Federation