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In this paper, we demonstrate the ability to recognize hand gestures in a non-contact, wireless fashion using only incoherent light signals reflected from a human subject. Fundamentally distinguished from radar, lidar and camera-based…

Signal Processing · Electrical Eng. & Systems 2020-07-17 Li Yu , Hisham Abuella , Md Zobaer Islam , John F. O'Hara , Christopher Crick , Sabit Ekin

Businesses planning for the post-pandemic world are looking for innovative ways to protect the health and welfare of their employees and customers. Wireless technologies can play a key role in assisting contact tracing to quickly halt a…

Cryptography and Security · Computer Science 2020-07-10 Pai Chet Ng , Petros Spachos , Stefano Gregori , Konstantinos Plataniotis

Covert communication allows us to transmit messages in such a way that it is not possible to detect that the communication is occurring. This provides protection in situations where knowledge that people are talking to each other may be…

Quantum Physics · Physics 2018-02-28 Juan Miguel Arrazola , Ryan Amiri

This paper presents a privacy-preserving event detection scheme based on measurements made by a network of sensors. A diameter-like decision statistic made up of the marginal types of the measurements observed by the sensors is employed.…

Information Theory · Computer Science 2025-05-06 Xiaoshan Wang , Tan F. Wong

Since ancient Greece, handshaking has been commonly practiced between two people as a friendly gesture to express trust and respect, or form a mutual agreement. In this paper, we show that such physical contact can be used to bootstrap…

Cryptography and Security · Computer Science 2018-01-24 Yiran Shen , Fengyuan Yang , Bowen Du , Weitao Xu , Chengwen Luo , Hongkai Wen

Human sociality depends upon the benefits of mutual aid and extensive communication. However mutual aid is made difficult by the problems of coordinating diverse norms and preferences, and communication is harried by substantial ambiguity…

Physics and Society · Physics 2015-11-17 Paul E. Smaldino , Thomas J. Flamson , Richard McElreath

Wearable technologies are today on the rise, becoming more common and broadly available to mainstream users. In fact, wristband and armband devices such as smartwatches and fitness trackers already took an important place in the consumer…

Cryptography and Security · Computer Science 2015-12-18 Tony Beltramelli , Sebastian Risi

A novel private communication framework is proposed where privacy is induced by transmitting over a channel instances of linear inverse problems that are identifiable to the legitimate receiver but unidentifiable to an eavesdropper. The gap…

Information Theory · Computer Science 2024-07-24 Maxime Ferreira Da Costa , Jianxiu Li , Urbashi Mitra

This work considers the problem of mitigating information leakage between communication and sensing in systems jointly performing both operations. Specifically, a discrete memoryless state-dependent broadcast channel model is studied in…

Information Theory · Computer Science 2023-03-22 Onur Günlü , Matthieu R. Bloch , Rafael F. Schaefer , Aylin Yener

In this paper, we present a number of robust methodologies for an underwater robot to visually detect, follow, and interact with a diver for collaborative task execution. We design and develop two autonomous diver-following algorithms, the…

Robotics · Computer Science 2018-04-11 Md Jahidul Islam

Contact tracing is an effective tool in controlling the spread of infectious diseases such as COVID-19. It involves digital monitoring and recording of physical proximity between people over time with a central and trusted authority, so…

Cryptography and Security · Computer Science 2023-03-13 Craig Gotsman , Kai Hormann

Implicit authentication consists of a server authenticating a user based on the user's usage profile, instead of/in addition to relying on something the user explicitly knows (passwords, private keys, etc.). While implicit authentication…

Cryptography and Security · Computer Science 2015-03-03 Josep Domingo-Ferrer , Qianhong Wu , Alberto Blanco-Justicia

Security monitoring via ubiquitous cameras and their more extended in intelligent buildings stand to gain from advances in signal processing and machine learning. While these innovative and ground-breaking applications can be considered as…

Cryptography and Security · Computer Science 2026-05-06 Mehmet Yamac , Mete Ahishali , Nikolaos Passalis , Jenni Raitoharju , Bulent Sankur , Moncef Gabbouj

Human computer interaction facilitates intelligent communication between humans and computers, in which gesture recognition plays a prominent role. This paper proposes a machine learning system to identify dynamic gestures using tri-axial…

Human-Computer Interaction · Computer Science 2018-09-19 Gautham Krishna G , Karthik Subramanian Nathan , Yogesh Kumar B , Ankith A Prabhu , Ajay Kannan , Vineeth Vijayaraghavan

Many promising applications of multimodal wearables require continuous sensing and heavy computation, yet users reject such devices due to privacy concerns. This paper shares our experiences building an ear-mounted voice-and-vision wearable…

Human-Computer Interaction · Computer Science 2025-11-26 Yonatan Tussa , Andy Heredia , Nirupam Roy

Collaborative inference among multiple wireless edge devices has the potential to significantly enhance Artificial Intelligence (AI) applications, particularly for sensing and computer vision. This approach typically involves a three-stage…

Cryptography and Security · Computer Science 2024-10-29 Mohamed Seif , Yuqi Nie , Andrea J. Goldsmith , H. Vincent Poor

Social interactions play a crucial role in shaping human behavior, relationships, and societies. It encompasses various forms of communication, such as verbal conversation, non-verbal gestures, facial expressions, and body language. In this…

Machine Learning · Computer Science 2026-05-13 Alice Zhang , Callihan Bertley , Dawei Liang , Edison Thomaz

Introduction: The use of chatbots is becoming increasingly important across various aspects of daily life. However, the privacy concerns associated with these communications have not yet been thoroughly addressed. The aim of this study was…

Human-Computer Interaction · Computer Science 2025-08-12 Julia Ive , Vishal Yadav , Mariia Ignashina , Matthew Rand , Paulina Bondaronek

Consensus is fundamental for distributed systems since it underpins key functionalities of such systems ranging from distributed information fusion, decision-making, to decentralized control. In order to reach an agreement, existing…

Optimization and Control · Mathematics 2018-12-27 Minghao Ruan , Huan Gao , Yongqiang Wang

Recent growth in popularity of mobile and wearable devices has re-ignited the need for reliable and stealthy communication side-channels to enable applications such as secret/PIN sharing, co-location proofs and user authentication. Existing…

Signal Processing · Electrical Eng. & Systems 2025-01-14 Raveen Wijewickrama , Sameer Anis Dohadwalla , Anindya Maiti , Murtuza Jadliwala , Sashank Narain