With the advancement of wireless technologies and sensing methodologies, many studies
have shown the success of re-using wireless signals (eg, WiFi) to sense human activities …

The Internet of Things (IoT) has grown over decades to encompass many forms of sensing
modalities, and continues to improve in terms of sophistication and lower costs. The trend of …

Passenger counting is crucial for many applications such as vehicle scheduling and traffic
capacity assessment. However, most of the existing solutions are either high-cost, privacy …

Crowd counting, which count or accurately estimate the number of human beings within a
region, is critical in many applications, such as guided tour, crowd control and marketing …

In this paper, we are interested in counting the total number of people walking in an area
based on only WiFi received signal strength indicator (RSSI) measurements between a pair …

Radio frequency based device-free passive (DfP) localization techniques have shown great
potentials in localizing individual human subjects, without requiring them to carry any radio …

In this paper, we discuss the emerging application of device-free localization (DFL) using
wireless sensor networks, which find people and objects in the environment in which the …

Wireless sensor networks (WSNs) have shown many attractive features in a lot of real-world
applications that motivate their rapid and wide diffusion. One of the most challenging topics …

We consider the recognition of activities from passive entities by analysing radio-frequency
(RF)-channel fluctuation. In particular, we focus on the recognition of activities by active …

FIG. 2 is a depiction of a link disturbance; FIGS. 3A and 3B are time plots of a signal strength
of a link as it is disturbed over time when an object Such as a person moves through and/or …