C-Auth: Exploring the Feasibility of Using Egocentric View of Face Contour for User Authentication on Glasses
Published in Proceedings of the 27th Annual International Symposium on Wearable Computers (ISWC), 2023
Abstract
In this paper, we present C-Auth, a novel authentication method for smart glasses that explores the feasibility of authenticating users using spatial facial information. Our system uses a down-facing camera in the middle of the glasses to capture facial contour lines from the nose and cheeks. The images captured by the camera are then processed and learned by a customized algorithm for au- thentication. To evaluate the system, we conducted a user study with 20 participants in three sessions on different days. Our system correctly identified the 20 users with a true positive rate of 98.0% (SD: 2.96%) and a false positive rate of 4.97% (2.88 %) across all three days. We conclude by discussing current limitations and challenges as well as the potential future applications for C-Auth.