Device-free human tracking using commodity Wi-Fi has garnered significant interest due to its potential for ubiquitous indoor sensing without the need for user instrumentation. However, achieving precise tracking in non-line-of-sight (NLoS) scenarios, particularly in through-wall environments, remains a challenging iss...
Zhi-Hui Ren, Wei Xu, Zhu Wang et al.· Proceedings of the ACM on In...· 1 citation
With the proliferation of WiFi-enabled IoT devices in modern indoor environments, low-cost passive WiFi localization has attracted significant attention. Unlike time-of-flight (ToF) and angle-of-arrival (AoA)-based approaches, which are constrained by limited bandwidth and antenna counts, Doppler-based passive WiFi loc...
Qin-Xiao Quan, Wen-Wei Li, Jie Xiong et al.· Proceedings of the ACM on In...· 1 citation
Gait recognition serves as a foundation for numerous applications, ranging from early disease diagnosis to continuous user authentication. While traditional methods rely on cameras or wearables to achieve gait recognition, RF-based solutions have emerged in recent years that better preserve privacy and do not require d...
Wen-Wei Li, Jia-Run Zhou, Jie Xiong et al.· Proceedings of the ACM on In...· 1 citation
Mobile task automation aims to streamline multi-step, cross-app interactions on smartphones and in-vehicle systems. Recent LLM-based GUI agents have advanced rapidly, yet reliability remains limited because modern mobile workflows are increasingly service-composed (app switching, forms, pop-ups/permissions, copy-paste)...
Wen-Tao Zhou, Si-Cong Liu, Zi-Mu Zhou et al.· Proceedings of the ACM on In...· 1 citation
Reliable cardiac monitoring in daily work environments could support applications such as stress assessment and mental workload tracking. Radar sensing provides a promising contactless solution by capturing subtle chest motion without requiring wearable devices. However, many existing methods assume quasi-static condit...
Zhao-Xin Chang, Pei Wang, Xu-Jun Ma et al.· Proceedings of the ACM on In...· 1 citation
This paper proposes PnPSelect, a plug-and-play IoT device selection solution utilizing Ultra-Wideband (UWB) technology on commercial devices, and introduces a pointing direction estimation method that utilizes UWB readings from a single anchor to infer the user’s pointing direction.
Zhao-Xin Chang, Fu-Sang Zhang, Jie Xiong et al.· ACM transactions on sensor n...· 0 citations
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