Zhengxiong Li

BioMoTouch is a multi-modal touch authentication framework that jointly models physiological contact structures (from capacitive screens) and behavioral motion dynamics (from inertial sensors) to achieve high accuracy and robustness in touch-based authentication.

PrivScope is a novel on-device governor that enforces task-scoped disclosure, ensuring sensitive information is abstracted to the least revealing form before being sent to a cloud language model, significantly reducing data leakage without compromising task utility.