In recent times, researchers have proposed numerous approaches that allow smartphones to determine user current locations (e.g., home, office, railway station, restaurant, street, supermarket etc.) and their activities (such as sitting, walking, running,...

In this study, we propose a system to determine the placement of a smartphone using acoustic properties of the surface materials nearby. Detecting the surrounding materials allows the smartphone to change notification method automatically based on ...

Numerous methods have been proposed that allow mobile devices to determine where they are located (e.g., home or office) and in some cases, predict what activity the user is currently engaged in (e.g., walking, sitting, or driving). While useful, this ...