Phone signal can track more than your location

NEW DELHI: A new study from IIT-Delhi reveals that the humble GPS chip inside smartphones can disclose far more than a user’s location. It can also quietly indicate what someone is doing—whether sitting, walking, or flying—and even describe their immediate environment, such as whether they are indoors, outdoors, in a crowded area, or on a flight.

The work, led by Soham Nag, an MTech student, and Profesor Smruti R. Sarangi from Department of Computer Science and Engineering, introduces a system called AndroCon, which can extract detailed contextual information solely from GPS data.