---
title: "Invisible biometric authentication by radar - AlmaScience"
description: "A bio-radar study with 20 subjects tests biometric authentication from respiratory and cardiac signals recorded across different emotional states."
url: "https://almascience.pt/news/scientific-paper/radar-based-invisible-biometric-authentication"
date: "2026-10-16T06:09:58+00:00"
language: "en-GB"
---

# News

  ![Radar-Based Invisible Biometric Authentication]() ##  Radar-Based Invisible Biometric Authentication

  [Scientific Paper](https://almascience.pt/news/scientific-paper)    12 February 2024  1 minute read

- Authors: M. Louro da Silva, C. Gouveia, D. F. Albuquerque, H. Plácido da Silva
- DOI: <https://doi.org/10.3390/info15010044>
- Journal: Information 2024, 15, 44
- Read the full article: <https://www.mdpi.com/2078-2489/15/1/44>
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In biometric authentication, one seeks to validate an individual’s claimed identity. Conventional methods can be forged or fooled, therefore, research has turned towards alternative methods, such as the bio-radar (BR) system.

In this work, a bio-radar dataset with 20 subjects was explored to implement biometric authentication. Subjects were exposed to different emotion-eliciting stimuli (happiness, fearfulness, and neutrality) in different dates, to further analyze the time and emotion results dependency. The study included the analysis of respiratory and cardiac signals separately, as well as their fusion. It was possible to infer the feasibility of BR systems, obtaining an Equal Error Rate (EER) of 3.48% using data of the same day.

- [ Biometrics ](https://almascience.pt/component/tags/tag/biometrics)

###  Continue reading...

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   26 April 2023

 [  ![Impact and Classification of Body Stature and Physiological Variability in the Acquisition of Vital Signs Using Continuous Wave Radar]()  ](https://almascience.pt/news/scientific-paper/acquisition-of-vital-signs-using-continuous-wave-radar)####  [ Impact and Classification of Body Stature and Physiological Variability in the Acquisition of Vital Signs Using Continuous Wave Radar ](https://almascience.pt/news/scientific-paper/acquisition-of-vital-signs-using-continuous-wave-radar)

   12 February 2024

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