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The growing trend of using wearable devices for context-aware computing and pervasive sensing systems has raised its potentials for quick and reliable authentication techniques. Since personal writing habitats differ from each other, it is…

Human-Computer Interaction · Computer Science 2017-10-24 Qi Lyu , Zhifeng Kong , Chao Shen , Tianwei Yue

Device-free human tracking is an essential ingredient for ubiquitous wireless sensing. Recent passive WiFi tracking systems face the challenges of inaccurate separation of dynamic human components and time-consuming estimation of…

Networking and Internet Architecture · Computer Science 2021-09-14 Zhongqin Wang , J. Andrew Zhang , Min Xu , Y. Jay Guo

In intelligent building management, knowing the number of people and their location in a room are important for better control of its illumination, ventilation, and heating with reduced costs and improved comfort. This is typically achieved…

Computer Vision and Pattern Recognition · Computer Science 2022-09-26 Thomas Dubail , Fidel Alejandro Guerrero Peña , Heitor Rapela Medeiros , Masih Aminbeidokhti , Eric Granger , Marco Pedersoli

This paper presents a novel WiFi-Visual data fusion method for indoor robot (TIAGO++) localization. This method can use 10 WiFi samples and 4 low-resolution images ($58 \times 58$ in pixels) to localize a indoor robot with an average error…

Robotics · Computer Science 2025-06-19 Yuehua Ding , Jean-Francois Dollinger , Vincent Vauchey , Mourad Zghal

Wi-Fi technology has evolved from simple communication routers to sensing devices. Wi-Fi sensing leverages conventional Wi-Fi transmissions to extract and analyze channel state information (CSI) for applications like proximity detection,…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Ahmed Y. Radwan , Mustafa Yildirim , Navid Hasanzadeh , Hina Tabassum , Shahrokh Valaee

Video capture is the most extensively utilized human perception source due to its intuitively understandable nature. A desired video capture often requires multiple environmental conditions such as ample ambient-light, unobstructed space,…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Xiang Li , Rabih Younes

The field of human activity recognition has evolved significantly, driven largely by advancements in Internet of Things (IoT) device technology, particularly in personal devices. This study investigates the use of ultra-wideband (UWB)…

Machine Learning · Computer Science 2025-09-09 Aurora Polo-Rodríguez , Juan Carlos Valera , Jesús Peral , David Gil , Javier Medina-Quero

While fulfilling communication tasks, wireless signals can also be used to sense the environment. Among various types of sensing media, WiFi signals offer advantages such as widespread availability, low hardware cost, and strong robustness…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Ruijing Liu , Cunhua Pan , Jiaming Zeng , Hong Ren , Kezhi Wang , Lei Kong , Jiangzhou Wang

Biometrics involves using unique human traits, both physical and behavioral, for the digital identification of individuals to provide access to systems, devices, or information. Within the field of computer science, it acts as a method for…

Cryptography and Security · Computer Science 2024-04-29 Sajjad Bhuiyan

Classification between different activities in an indoor environment using wireless signals is an emerging technology for various applications, including intrusion detection, patient care, and smart home. Researchers have shown different…

Information Theory · Computer Science 2021-02-10 B. R. Manoj , Guoda Tian , Sara Gunnarsson , Fredrik Tufvesson , Erik G. Larsson

The traditional two-factor authentication (2FA) methods primarily rely on the user manually entering a code or token during the authentication process. This can be burdensome and time-consuming, particularly for users who must be…

Cryptography and Security · Computer Science 2024-01-15 Ali Abdullah S. AlQahtani , Thamraa Alshayeb , Mahmoud Nabil , Ahmad Patooghy

Proximity detection in indoor environments based on WiFi signals has gained significant attention in recent years. Existing works rely on the dynamic signal reflections and their extracted features are dependent on motion strength. To…

Signal Processing · Electrical Eng. & Systems 2024-05-01 Yuqian Hu , Guozhen Zhu , Beibei Wang , K. J. Ray Liu

Vision-aided wireless communication is attracting increasing interest and finding new use cases in various wireless communication applications. These vision-aided communication frameworks leverage visual data captured, for example, by…

Signal Processing · Electrical Eng. & Systems 2023-08-08 Gouranga Charan , Ahmed Alkhateeb

Having been studied for more than a decade, Wi-Fi human sensing still faces a major challenge in the presence of multiple persons, simply because the limited bandwidth of Wi-Fi fails to provide a sufficient range resolution to physically…

Networking and Internet Architecture · Computer Science 2023-08-22 Jingzhi Hu , Tianyue Zheng , Zhe Chen , Hongbo Wang , Jun Luo

With the rapid development of the Internet of Things (IoT) and the rise of 5G communication networks and automatic driving, millimeter wave (mmWave) sensing is emerging and starts impacting our life and workspace. mmWave sensing can sense…

Networking and Internet Architecture · Computer Science 2023-08-08 Jia Zhang , Rui Xi , Yuan He , Yimiao Sun , Xiuzhen Guo , Weiguo Wang , Xin Na , Yunhao Liu , Zhenguo Shi , Tao Gu

Radio frequency sensor networks are becoming increasingly popular as an indoor localization and monitoring technology for gaining unobtrusive situational awareness of the surrounding environment. The localization effort in these networks is…

Networking and Internet Architecture · Computer Science 2014-05-29 Hüseyin Yiğitler , Riku Jäntti , Ossi Kaltiokallio

This paper introduces CSI-RFF, a new framework that leverages micro-signals embedded within Channel State Information (CSI) curves to realize Radio-Frequency Fingerprinting of commodity off-the-shelf (COTS) WiFi devices for open-set…

Signal Processing · Electrical Eng. & Systems 2026-02-27 Ruiqi Kong , He Chen

Identity authentication is crucial for ensuring the information security of wireless communication. Radio frequency (RF) fingerprinting techniques provide a prom-ising supplement to cryptography-based authentication approaches but rely on…

Cryptography and Security · Computer Science 2024-08-14 Junjie Wang , Yong Huang , Feiyang Zhao , Wenjing Wang , Dalong Zhang , Wei Wang

Emotion is an essential part of Artificial Intelligence (AI) and human mental health. Current emotion recognition research mainly focuses on single modality (e.g., facial expression), while human emotion expressions are multi-modal in…

Human-Computer Interaction · Computer Science 2020-12-22 Yu Gu , Xiang Zhang , Zhi Liu , Fuji Ren

Current data-driven Wi-Fi-based indoor localization systems face three critical challenges: protecting user privacy, achieving accurate predictions in dynamic multipath environments, and generalizing across different deployments.…

Cryptography and Security · Computer Science 2025-12-23 Kanishka Roy , Tahsin Fuad Hasan , Chenfeng Wu , Eshwar Vangala , Roshan Ayyalasomayajula