Human activity recognition is a key to a lot of applications such as healthcare and smart
home. In this study, we provide a comprehensive survey on recent advances and challenges …

With the flourish of the smart devices and their applications, controlling devices using
gestures has attracted increasing attention for ubiquitous sensing and interaction. Recent …

This paper explores the possibility of tracking finger drawings in the air leveraging WiFi
signals from commodity devices. Prior solutions typically require user to hold a wireless …

Respiratory diseases have been a significant public health challenge. Efficient disease
evaluation and monitoring call for daily spirometry tests, as an effective way of pulmonary …

With the proliferation of Internet-of-Things (IoT) devices, acoustic sensing attracts significant
attention in recent years. It exploits acoustic transceivers such as microphones and speakers …

Recent years have witnessed increasing attention from both academia and industry on
contact-free acoustic sensing. Due to the pervasiveness of audio devices and fine …

Though playing an essential role in smart home systems, smart speakers are vulnerable to
voice spoofing attacks. Passive liveness detection, which utilizes only the collected audio …

With the rising of AR/VR technology and miniaturization of mobile devices, gesture
recognition is becoming increasingly popular in the research area of human-computer …

Indoor localization is crucial to enable context-aware applications, but existing solutions
mostly require a user to carry a device, so as to actively sense location-discriminating …

Recent years have seen interest in device tracking and localization using acoustic signals.
State-of-the-art acoustic motion tracking systems however do not achieve millimeter …