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While it is often critical for indoor-location- and proximity-aware applications to know whether a user is in a space or not (e.g., a specific room or office), a key challenge is that the difference between standing on one side or another…

Human-Computer Interaction · Computer Science 2020-02-04 Scott A. Carter , Daniel Avrahami , Nami Tokunaga

Accurate and robust indoor localization is critical for smart building applications, yet existing Wi-Fi-based systems are often vulnerable to environmental conditions. This work presents a novel indoor localization system, called LiGen,…

Robotics · Computer Science 2025-10-31 Jie Lin , Hsun-Yu Lee , Ho-Ming Li , Fang-Jing Wu

Digital contact tracing is one of the actions useful, in combination with other measures, to manage an epidemic diffusion of an infection disease in an after-lock-down phase. This is a very timely issue, due to the pandemic of COVID-19 we…

Cryptography and Security · Computer Science 2020-05-22 Francesco Buccafurri , Vincenzo De Angelis , Cecilia Labrini

Indoor Positioning System (IPS) is a crucial technology that enables medical staff and hospital managements to accurately locate and track persons or assets inside the medical buildings. Among other technologies, Bluetooth Low Energy (BLE)…

Signal Processing · Electrical Eng. & Systems 2023-10-24 Silvano Cortesi , Marc Dreher , Michele Magno

The main backbone of our Artificial Eye model is the Raspberry pi3 which is connected to the webcam ,ultrasonic proximity sensor, speaker and we also run all our software models i.e object detection, Optical Character recognition, google…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Abhinav Benagi , Dhanyatha Narayan , Charith Rage , A Sushmitha

Accurate indoor localization underpins applications ranging from wayfinding and emergency response to asset tracking and smart-building services. Radio-frequency solutions (e.g. Wi-Fi, RFID, UWB) are widely adopted but remain vulnerable to…

Signal Processing · Electrical Eng. & Systems 2025-08-06 Hsun-Yu Lee , Jie Lin , Fang-Jing Wu

People who are blind employ unique strategies when performing instrumental activities of daily living (iADLs), often relying on multiple sensory modalities and assistive technologies. While prior research has extensively explored adaptive…

Human-Computer Interaction · Computer Science 2025-02-25 Lily M. Turkstra , Tanya Bhatia , Alexa Van Os , Michael Beyeler

This paper presents a novel, cost-effective, and scalable approach to track numerous assets distributed in forested environments using commodity Radio Frequency Identification (RFID) targeting wildfire response applications. Commodity RFID…

Machine Learning · Computer Science 2026-03-19 John Hateley , Sriram Narasimhan , Omid Abari

This article has been withdrawn by arXiv administrators due to plagiarized content from arXiv:1009.3448.

Computers and Society · Computer Science 2011-09-08 A. D. Potgantwar , Vijay M. Wadhai

Radio Frequency Fingerprinting (RFF) techniques allow a receiver to authenticate a transmitter by analyzing the physical layer of the radio spectrum. Although the vast majority of scientific contributions focus on improving the performance…

Cryptography and Security · Computer Science 2025-11-24 Gabriele Oligeri , Savio Sciancalepore

People suffering from Alzheimer's disease (AD) and their caregivers seek different approaches to cope with memory loss. Although AD patients want to live independently, they often need help from caregivers. In this situation, caregivers may…

Human-Computer Interaction · Computer Science 2023-01-24 Fatemeh Ghorbani , Mohammad Kia , Mehdi Delrobaei , Quazi Rahman

This paper presents Finger Based Technique (FBT) prototypes, a novel interaction system for blind users, which is especially designed and developed for non-visual touch screen devices and their applications. The FBT prototypes were…

Human-Computer Interaction · Computer Science 2017-08-18 Mohammed Fakrudeen , Sufian Yousef , Mahdi H Miraz

This paper presents AI Guide Dog (AIGD), a lightweight egocentric (first-person) navigation system for visually impaired users, designed for real-time deployment on smartphones. AIGD employs a vision-only multi-label classification approach…

Pedestrian dead-reckoning (PDR) is a potential indoor localization technology that obtains location estimation with the inertial measurement unit (IMU). However, one of its most significant drawbacks is the accumulation of its measurement…

Signal Processing · Electrical Eng. & Systems 2023-01-10 Shangsheng Wen , Ziyang Ge , Danlan Yuan , Yingcong Chen , Xuecong Fang

Bluetooth Low Energy systems are one of the most popular solutions used for indoor localization. Unfortunately their accuracy might not be sufficient for some of the applications. One way to reduce localization errors is hybrid positioning,…

Signal Processing · Electrical Eng. & Systems 2024-04-01 Marcin Kolakowski

Accurate orientation estimation of objects can aid in scene understanding in many applications. In this paper, we consider use cases where passive tags could be deployed to assist radar systems in estimating object orientation. Towards that…

Signal Processing · Electrical Eng. & Systems 2025-09-09 Onel L. A. López , Zhu Han , Ashutosh Sabharwal

Device-free localization (DFL) based on the received signal strength (RSS) measurements of radio frequency (RF)links is the method using RSS variation due to the presence of the target to localize the target without attaching any device.…

Networking and Internet Architecture · Computer Science 2015-05-14 Zhenghuan Wang , Heng Liu , Shengxin Xu , Xiangyuan Bu , Jianping An

Compared to other biometrics, gait is difficult to conceal and has the advantage of being unobtrusive. Inertial sensors, such as accelerometers and gyroscopes, are often used to capture gait dynamics. These inertial sensors are commonly…

Machine Learning · Computer Science 2020-04-30 Qin Zou , Yanling Wang , Qian Wang , Yi Zhao , Qingquan Li

The paper is a technical analysis of the security infrastructure in the field of RFID technology. The paper briefly discusses the architecture of the RFID technology. Then it analyses the various features and advantages RFID technology has…

Cryptography and Security · Computer Science 2015-05-04 Tuhin Borgohain , Sugata Sanyal

According to the World Health Organization, visual impairment is estimated to affect approximately 2.2 billion people worldwide. The visually impaired must currently rely on navigational aids to replace their sense of sight, like a white…

Human-Computer Interaction · Computer Science 2022-06-23 Stanley Shen