scholarly journals A Wearable Wrist Band-Type System for Multimodal Biometrics Integrated with Multispectral Skin Photomatrix and Electrocardiogram Sensors

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2738 ◽  
Author(s):  
Hanvit Kim ◽  
Haena Kim ◽  
Se Chun ◽  
Jae-Hwan Kang ◽  
Ian Oakley ◽  
...  
Keyword(s):  
Type System ◽  
Personal Data ◽  
Fast Response ◽  
Remote Access ◽  
Security Level ◽  
Multimodal Biometrics ◽  
Response Acquisition ◽  
Practical Applications ◽  
Efficient Memory ◽  
Personal Authentication

Multimodal biometrics are promising for providing a strong security level for personal authentication, yet the implementation of a multimodal biometric system for practical usage need to meet such criteria that multimodal biometric signals should be easy to acquire but not easily compromised. We developed a wearable wrist band integrated with multispectral skin photomatrix (MSP) and electrocardiogram (ECG) sensors to improve the issues of collectability, performance and circumvention of multimodal biometric authentication. The band was designed to ensure collectability by sensing both MSP and ECG easily and to achieve high authentication performance with low computation, efficient memory usage, and relatively fast response. Acquisition of MSP and ECG using contact-based sensors could also prevent remote access to personal data. Personal authentication with multimodal biometrics using the integrated wearable wrist band was evaluated in 150 subjects and resulted in 0.2% equal error rate ( EER ) and 100% detection probability at 1% FAR (false acceptance rate) ( PD . 1 ), which is comparable to other state-of-the-art multimodal biometrics. An additional investigation with a separate MSP sensor, which enhanced contact with the skin, along with ECG reached 0.1% EER and 100% PD . 1 , showing a great potential of our in-house wearable band for practical applications. The results of this study demonstrate that our newly developed wearable wrist band may provide a reliable and easy-to-use multimodal biometric solution for personal authentication.

scholarly journals Alcohol-based highly conductive polymer for conformal nanocoatings on hydrophobic surfaces toward a highly sensitive and stable pressure sensor

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jung Joon Lee ◽  
Srinivas Gandla ◽  
Byeongjae Lim ◽  
Sunju Kang ◽  
Sunyoung Kim ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Mechanical Stability ◽  
Exchange Process ◽  
Conductive Polymer ◽  
High Sensitivity ◽  
Fast Response ◽  
Pdms Surface ◽  
Practical Applications ◽  
Sensor Applications ◽  
Water Based

Abstract Conformal and ultrathin coating of highly conductive PEDOT:PSS on hydrophobic uneven surfaces is essential for resistive-based pressure sensor applications. For this purpose, a water-based poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) solution was successfully exchanged to an organic solvent-based PEDOT:PSS solution without any aggregation or reduction in conductivity using the ultrafiltration method. Among various solvents, the ethanol (EtOH) solvent-exchanged PEDOT:PSS solution exhibited a contact angle of 34.67°, which is much lower than the value of 96.94° for the water-based PEDOT:PSS solution. The optimized EtOH-based PEDOT:PSS solution exhibited conformal and uniform coating, with ultrathin nanocoated films obtained on a hydrophobic pyramid polydimethylsiloxane (PDMS) surface. The fabricated pressure sensor showed high performances, such as high sensitivity (−21 kPa−1 in the low pressure regime up to 100 Pa), mechanical stability (over 10,000 cycles without any failure or cracks) and a fast response time (90 ms). Finally, the proposed pressure sensor was successfully demonstrated as a human blood pulse rate sensor and a spatial pressure sensor array for practical applications. The solvent exchange process using ultrafiltration for these applications can be utilized as a universal technique for improving the coating property (wettability) of conducting polymers as well as various other materials.

scholarly journals Robust Conductive Hydrogels with Ultrafast Self-Recovery and Nearly Zero Response Hysteresis for Epidermal Sensors

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1854
Author(s):  
Xiuru Xu ◽  
Chubin He ◽  
Feng Luo ◽  
Hao Wang ◽  
Zhengchun Peng
Keyword(s):  
Guar Gum ◽  
Strain Range ◽  
Sio2 Nanoparticles ◽  
Fast Response ◽  
Gauge Factor ◽  
Practical Applications ◽  
Hydroxypropyl Guar ◽  
Stable Chemical ◽  
Conductive Hydrogel ◽  
Conductive Hydrogels

Robust conductive hydrogels are in great demand for the practical applications of smart soft robots, epidermal electronics, and human–machine interactions. We successfully prepared nanoparticles enhanced polyacrylamide/hydroxypropyl guar gum/acryloyl-grafted chitosan quaternary ammonium salt/calcium ions/SiO2 nanoparticles (PHC/Ca2+/SiO2 NPs) conductive hydrogels. Owing to the stable chemical and physical hybrid crosslinking networks and reversible non-covalent interactions, the PHC/Ca2+/SiO2 NPs conductive hydrogel showed good conductivity (~3.39 S/m), excellent toughness (6.71 MJ/m3), high stretchability (2256%), fast self-recovery (80% within 10 s, and 100% within 30 s), and good fatigue resistance. The maximum gauge factor as high as 66.99 was obtained, with a wide detectable strain range (from 0.25% to 500% strain), the fast response (25.00 ms) and recovery time (86.12 ms), excellent negligible response hysteresis, and good response stability. The applications of monitoring the human’s body movements were demonstrated, such as wrist bending and pulse tracking.

Analytical Review of Biometric Technology Employing Vivid Modalities

2021 ◽  
pp. 2250004
Author(s):  
Vandana ◽  
Navdeep Kaur
Keyword(s):  
Security And Privacy ◽  
Future Research ◽  
Multimodal Biometrics ◽  
Biometric Technology ◽  
Practical Applications ◽  
Biometric Systems ◽  
Potential Applications ◽  
Analytical Review ◽  
Comprehensive Survey ◽  
Technology Market

The digitalization has been challenged with the security and privacy aspects in each and every field. In addition to numerous authentication methods, biometrics has been popularized as it relies on one’s individual behavioral and physical characters. In this context, numerous unimodal and multimodal biometrics have been proposed and tested in the last decade. In this paper, authors have presented a comprehensive survey of the existing biometric systems while highlighting their respective challenges, advantage and limitations. The paper also discusses the present biometric technology market value, its scope, and practical applications in vivid sectors. The goal of this review is to offer a compact outline of various advances in biometrics technology with potential applications using unimodal and multimodal bioinformatics are discussed that would prove to offer a base for any biometric-based future research.

scholarly journals Spearing High Net Wealth Individuals

2013 ◽  
Vol 7 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Nigel Martin ◽  
John Rice
Keyword(s):  
Personal Data ◽  
Internet Security ◽  
Remote Access ◽  
Internet Fraud ◽  
Internet Users ◽  
Aging Populations ◽  
Online Business ◽  
Awareness Programs ◽  
Ongoing Development ◽  
Software Attacks

Every day dangerous criminals are targeting high net wealth members of our community as they venture onto the internet. Statements from twenty-nine community organizations and mature age internet users were analyzed using structured coding techniques in order to identify the major criminal risks and threats, and key protective safeguards. The study warns that mature users, particularly those with high net wealth, are critically vulnerable to internet fraud, and personal data and identification theft through spear phishing email and remote access trojan malicious software attacks. The major implication for countries with aging populations, and rising numbers of mature internet users, is the urgent need for ongoing development and resourcing of internet security skills and awareness programs; consumer protection laws and law enforcement assistance; affordable protective internet technologies and complementary support schemes; and the strengthening of online business codes and standards, particularly in dealings with older people.

Realization of cubic ZnMgO photodetectors for UVB applications

2015 ◽  
Vol 3 (2) ◽  
pp. 313-317 ◽  
Author(s):  
Ming-Ming Fan ◽  
Ke-Wei Liu ◽  
Xing Chen ◽  
Zhen-Zhong Zhang ◽  
Bing-Hui Li ◽  
...  
Keyword(s):  
Dark Current ◽  
Response Speed ◽  
Fast Response ◽  
Practical Applications ◽  
High Responsivity

Cubic ZnMgO UVB photodetectors with low dark current, high responsivity and fast response speed are very promising for practical applications.

scholarly journals Whole Slide Imaging for Analytical Anatomic Pathology and Telepathology: Practical Applications Today, Promises, and Perils

2017 ◽  
Vol 141 (4) ◽  
pp. 542-550 ◽  
Author(s):  
Alton Brad Farris ◽  
Cynthia Cohen ◽  
Thomas E. Rogers ◽  
Geoffrey H. Smith
Keyword(s):  
Patient Care ◽  
Objective Assessment ◽  
Progesterone Receptors ◽  
High Volume ◽  
Daily Practice ◽  
Remote Access ◽  
Quality Analysis ◽  
Whole Slide Imaging ◽  
Ki 67 ◽  
Practical Applications

Whole slide imaging (WSI) offers a convenient, tractable platform for measuring features of routine and special-stain histology or in immunohistochemistry staining by using digital image analysis (IA). We now routinely use IA for quantitative and qualitative analysis of theranostic markers such as human epidermal growth factor 2 (HER2/neu), estrogen and progesterone receptors, and Ki-67. Quantitative IA requires extensive validation, however, and may not always be the best approach, with pancreatic neuroendocrine tumors being one example in which a semiautomated approach may be preferable for patient care. We find that IA has great utility for objective assessment of gastrointestinal tract dysplasia, microvessel density in hepatocellular carcinoma, hepatic fibrosis and steatosis, renal fibrosis, and general quality analysis/quality control, although the applications of these to daily practice are still in development. Collaborations with bioinformatics specialists have explored novel applications to gliomas, including in silico approaches for mining histologic data and correlating with molecular and radiologic findings. We and many others are using WSI for rapid, remote-access slide reviews (telepathology), though technical factors currently limit its utility for routine, high-volume diagnostics. In our experience, the greatest current practical impact of WSI lies in facilitating long-term storage and retrieval of images while obviating the need to keep slides on site. Once the existing barriers of capital cost, validation, operator training, software design, and storage/back-up concerns are overcome, these technologies appear destined to be a cornerstone of precision medicine and personalized patient care, and to become a routine part of pathology practice.

scholarly journals Self-powered UV-visible photodetector with fast response and high photosensitivity employing an Fe:TiO2/n-Si heterojunction

RSC Advances ◽  
2017 ◽  
Vol 7 (81) ◽  
pp. 51744-51749 ◽  
Author(s):  
Lin Sun ◽  
Chunrui Wang ◽  
Tao Ji ◽  
Jiale Wang ◽  
Gyu-Chul Yi ◽  
...  
Keyword(s):  
Fast Response ◽  
Practical Applications ◽  
Uv Visible ◽  
Self Powered ◽  
High Photosensitivity

An ultrasensitive, fast response and self-powered photodetector would be preferable in practical applications.

scholarly journals New Authentication Model for Multimodal Biometrics Based on Shape Features Vectors

2019 ◽  
Vol 54 (6) ◽  
Author(s):  
Sundos Abdulameer Alazawi ◽  
Huda Abdulaaliabdulbaqi ◽  
Yasmin Makki Mohialden
Keyword(s):  
High Performance ◽  
Feature Fusion ◽  
Personal Data ◽  
Rejection Rate ◽  
Shape Features ◽  
Multimodal Biometrics ◽  
Invariant Moments ◽  
Measurement And Analysis ◽  
Authentication System ◽  
Form Features

Biometrics is the science and technology dealing with the measurement and analysis of the biological features of the human body. The analysis is based on comparing the value of certain measured features with the form features in the database. Unimodal Biometric Systems have many limitations regarding precision in the identification/authentication of personal data. To accurately identify a person, a multimodal biometrics system such as combining face and fingerprint characteristic is used. Many such multi-biometrics fusion possibilities exist that can be utilized as an authentication system. In this paper, we present a new authentication system of the multimodal biometrics method for both face and fingerprint characteristics based on general shape feature fusion vectors. There are two main phases in our method: first, the fused shape features for both face and fingerprint images are extracted in accordance with central moments, and second, these features were recognized for retrieval of an authorized person using direct Euclidian distance. Experimentally, we tested about 100 shape features vectors, and observed that our method allows to improve the multimodal biometrics model when we are using the same features for two biometric images. A new method has a high-performance precision when invariant moments are used to extract shape features vectors and when similarity measurements computed based on direct Euclidean distance in the experiments are performed. We recorded False Acceptance Rate, False Rejection Rate, and Accuracy, FAR and FRR where the accuracy of the model is 91 %.

Remote Access to Scientific Laboratory Equipment and Competency-Based Approach to Science and Technology Education

2014 ◽  
Vol 10 (3) ◽  
pp. 19-33 ◽  
Author(s):  
M.I. Mazuritskiy ◽  
S.A. Safontsev ◽  
B.G. Konoplev ◽  
A.M. Boldyreva
Keyword(s):  
Experimental Work ◽  
Traditional Approach ◽  
Science And Technology ◽  
Remote Access ◽  
Learning System ◽  
Skilled Workers ◽  
Laboratory Equipment ◽  
Practical Applications ◽  
E Learning ◽  
Competency Based

This article describes the competency-based approach to e-learning education that utilizes remote access to the laboratory equipment. The main focus of the paper is the structure and design of the e-learning system used in the Southern Federal University (Russia). The article discusses the related pedagogical strategies and presents system's features in the context of the education for skilled workers. This approach uses access to the scientific and technology laboratory equipment either for provisioning of the individualized educational programs or to enable the students who are unable to attend a conventional laboratory for a variety of reasons, such as disability, and part-time study to conduct the experimental work. It will be shown that the experimental work involving the modern scientific equipment is an important aspect of the learning process in the areas of material science and nanotechnology. The learning strategy is the reverse of that used in the traditional approach. The authors suggest to start with the introduction to the practical applications of science and technology relevant to the current job market, and study the general laws and theoretical principles afterwards, to deepen understanding and achieve the educational goals.

Remote Access to Scientific Laboratory Equipment and Competency-Based Approach to Science and Technology Education

2015 ◽  
pp. 1302-1316
Author(s):  
M.I. Mazuritskiy ◽  
S.A. Safontsev ◽  
B.G. Konoplev ◽  
A.M. Boldyreva
Keyword(s):  
Experimental Work ◽  
Traditional Approach ◽  
Science And Technology ◽  
Remote Access ◽  
Laboratory Equipment ◽  
Practical Applications ◽  
Science And Technology Education ◽  
E Learning ◽  
Competency Based ◽  
Individualized Educational Programs

This article describes the competency-based approach to e-learning education that utilizes remote access to the laboratory equipment. The main focus of the paper is the structure and design of the e-learning system used in the Southern Federal University (Russia). The article discusses the related pedagogical strategies and presents system's features in the context of the education for skilled workers. This approach uses access to the scientific and technology laboratory equipment either for provisioning of the individualized educational programs or to enable the students who are unable to attend a conventional laboratory for a variety of reasons, such as disability, and part-time study to conduct the experimental work. It will be shown that the experimental work involving the modern scientific equipment is an important aspect of the learning process in the areas of material science and nanotechnology. The learning strategy is the reverse of that used in the traditional approach. The authors suggest to start with the introduction to the practical applications of science and technology relevant to the current job market, and study the general laws and theoretical principles afterwards, to deepen understanding and achieve the educational goals.

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