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Photoplethysmography (PPG) Sensors, widely deployed in smartwatches, offer a simple and non-invasive authentication approach for daily use. However, PPG authentication faces reliability issues due to motion artifacts from physical activity…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Jiankai Tang , Jiacheng Liu , Renling Tong , Kai Zhu , Zhe Li , Xin Yi , Junliang Xing , Yuanchun Shi , Yuntao Wang

A person's passage of time perception (POTP) is strongly linked to their mental state and stress response, and can therefore provide an easily quantifiable means of continuous mental health monitoring. In this work, we develop a custom…

Signal Processing · Electrical Eng. & Systems 2021-07-15 Lara Orlandic , Adriana Arza Valdes , David Atienza

One-time login process in conventional authentication systems does not guarantee that the identified user is the actual user throughout the session. However, it is necessary to re-verify the user identity periodically throughout a login…

Cryptography and Security · Computer Science 2018-03-07 Abbas Acar , Hidayet Aksu , A. Selcuk Uluagac , Kemal Akkaya

The technique of near infrared spectroscopy (NIRS) allows to measure the oxygenation of the brain tissue. The particular problems involved in detecting regional brain oxygenation (rSO2) are discussed. The dominant chromophore (light…

Medical Physics · Physics 2016-12-30 Alexander Gersten , Jacqueline Perle , Dov Heimer , Amir Raz , Robert Fried

Biometric authentication is a widely used security mechanism that leverages unique physiological or behavioral characteristics to authenticate users. In multi-factor biometrics (MFB), multiple biometric modalities, e.g., physiological and…

Cryptography and Security · Computer Science 2025-07-08 Howard Halim , Eyasu Getahun Chekole , Daniël Reijsbergen , Jianying Zhou

Medical Internet of Things (IoMT) is the next frontier in the digital revolution and is utilized in healthcare. In this context, IoT enables individuals to remotely manage their essential activities with minimal interaction. However, the…

Cryptography and Security · Computer Science 2024-07-18 Laleh Khajehzadeh , Hamid Barati , Ali Barati

Web authentication is a critical component of today's Internet and the digital world we interact with. The FIDO2 protocol enables users to leverage common devices to easily authenticate to online services in both mobile and desktop…

Cryptography and Security · Computer Science 2023-06-22 Wei-Zhu Yeoh , Michal Kepkowski , Gunnar Heide , Dali Kaafar , Lucjan Hanzlik

Identity verification is an increasingly important process in our daily lives, and biometric recognition is a natural solution to the authentication problem. One of the most important research directions in the field of biometrics is the…

Computer Vision and Pattern Recognition · Computer Science 2011-05-23 Francesco Beritelli , Andrea Spadaccini

Background: More than half (57%) of pharma clinical research spend is in support of clinical trials. One reason is that Electronic Health Record (EHR) systems and HIPAA privacy rules often limit how broadly patient information can be…

Quantitative Methods · Quantitative Biology 2018-07-03 Andrew J McMurry , Richen Zhang , Alex Foxman , Lawrence Reiter , Ronny Schnel , DeLeys Brandman

As IoT becomes omnipresent vast amounts of data are generated, which can be used for building innovative applications. However,interoperability issues and security concerns, prevent harvesting the full potentials of these data. In this…

Cryptography and Security · Computer Science 2022-09-02 Nikos Fotiou , Iakovos Pittaras , Spiros Chadoulos , Vasilios A. Siris , George C. Polyzos , Nikolaos Ipiotis , Stratos Keranidis

Recently, the wearable and non-invasive blood glucose estimation approach has been proposed. However, due to the unreliability of the acquisition device, the presence of the noise and the variations of the acquisition environments, the…

Medical Physics · Physics 2025-03-07 Yiting Wei , Bingo Wing-Kuen Ling , Danni Chen , Yuheng Dai , Qing Liu

In many clinical conditions, such as head trauma, stroke, and low cardiac output states, the brain is at risk for hypoxic-ischemic injury. The metabolic rate and oxygen consumption of the brain are reflected in internal jugular venous…

Individuals create and consume more diverse data about themselves today than any time in history. Sources of this data include wearable devices, images, social media, geospatial information and more. A tremendous opportunity rests within…

Computers and Society · Computer Science 2018-08-27 Nitish Nag , Vaibhav Pandey , Preston J. Putzel , Hari Bhimaraju , Srikanth Krishnan , Ramesh C. Jain

In this study, we make non-invasive, remote, passive measurements of the heart beat frequency and determine the map of blood pulsation intensity in a region of interest (ROI) of skin. The ROI used was the forearm of a volunteer. The method…

Medical Physics · Physics 2016-11-14 Pedro Henrique de M. Borges , George C. Cardoso

This paper presents BodyPIN, which is a continuous user authentication system by contactless wireless sensing using commodity Wi-Fi. BodyPIN can track the current user's legal identity throughout a computer system's execution. In case the…

Cryptography and Security · Computer Science 2019-05-20 Fei Wang , Zhenjiang Li , Jinsong Han

Human gait is a widely used biometric trait for user identification and recognition. Given the wide-spreading, steady diffusion of ear-worn wearables (Earables) as the new frontier of wearable devices, we investigate the feasibility of…

Human-Computer Interaction · Computer Science 2021-08-30 Andrea Ferlini , Dong Ma , Robert Harle , Cecilia Mascolo

With the latest developments in technology, extra and extra human beings depend on their private gadgets to keep their touchy information. Concurrently, the surroundings in which these gadgets are linked have grown to grow to be greater…

Cryptography and Security · Computer Science 2021-09-08 Rushit Dave

Wearable devices like smartwatches, wristbands, and fitness trackers are designed to be lightweight devices to be worn on the human body. With the increased connectivity of wearable devices, they will become integral to remote healthcare…

Cryptography and Security · Computer Science 2024-10-11 Andric Li , Grace Luo , Christopher Tao , Diego Zuluaga

Photoplethysmography (PPG) is an attractive method to acquire vital signs such as heart rate and blood oxygenation and is frequently used in clinical and at-home settings. Continuous operation of health monitoring devices demands a low…

Systems and Control · Electrical Eng. & Systems 2022-08-16 Sina Faraji Alamouti , Jasmine Jan , Cem Yalcin , Jonathan Ting , Ana Claudia Arias , Rikky Muller

Chronic disease management and follow-up are vital for realizing sustained patient well-being and optimal health outcomes. Recent advancements in wearable sensing technologies, particularly wrist-worn devices, offer promising solutions for…

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