Device-free gesture tracking is an enabling HCI mechanism for small wearable devices
because fingers are too big to control the GUI elements on such small screens, and it is also …

Next generation devices, such as virtual reality (VR), augmented reality (AR), and smart
appliances, demand a simple and intuitive way for users to interact with them. To address …

Smart speakers allow users to interact with home appliances using voice commands and
are becoming increasingly popular. While voice-based interface is intuitive, it is insufficient …

This paper explores the limits of acoustic ranging on smart phone in the scenario of device-
free hand tracking. Tracking the hand is challenging since it requires continuously locating …

Contactless acoustic motion tracking enables new opportunities to interact with smart
devices, such as smartphones and voice-controlled smart assistants. The speakers and …

A mouse has been one of the most successful user interfaces due to its intuitive use. As
more devices are equipped with displays and offer rich options for users to choose from, a …

This paper explores the possibility of extending the input and interactions beyond the small
screen of the mobile device onto ad hoc adjacent surfaces, eg, a wooden tabletop with …

This paper demonstrates that it is possible to leverage WiFi signals from commodity mobile
devices to enable hands-free drawing in the air. While prior solutions require the user to …

Enabling touch gesture sensing on all surfaces of the mobile device, not limited to the
touchscreen area, leads to new user interaction experiences. In this paper, we propose …

We present fingerIO, a novel fine-grained finger tracking solution for around-device
interaction. FingerIO does not require instrumenting the finger with sensors and works even …