The wide diffusion of wearable sensors and mobile devices encouraged the study of
biometric recognition techniques that require a low level of cooperation from users. Among …

Traditional one-time user authentication processes might cause friction and unfavorable
user experience in many widely-used applications. This is a severe problem in particular for …

Wearable technologies provide a non-invasive way to monitor user's activity, identity, and
health in real-time, which have attracted tremendous interests from both academia and …

Internet of Things (IoT) are densely deployed in smart environments, such as homes,
factories and laboratories, where many people have physical access to IoT devices. How to …

In this work, we demonstrates the feasibility of employing the biometric
photoplethysmography (PPG) signal for human verification applications. The PPG signal has …

Objective: Based on different physiological mechanisms, the respiratory modulations of
photoplethysmography (PPG) signals differ in strength and resultant accuracy of respiratory …

In this paper, we propose a system that enables photoplethysmogram (PPG)-based
authentication by using a smartphone camera. PPG signals are obtained by recording a …

The ever-growing security issues in various mobile applications and smart devices create an
urgent demand for a reliable and convenient user verification method. Traditional verification …

User authentication has become necessary in different life domains. Traditional
authentication methods like personal information numbers (PINs), password ID cards, and …

Unobservable physiological signals enhance biometric authentication systems.
Photoplethysmography (PPG) signals are convenient owing to its ease of measurement and …