AirSignatureDB: Exploring In-Air Signature Biometrics in the Wild and its Privacy ConcernsMarta Robledo-Moreno, Ruben Vera-Rodriguez, Ruben Tolosana, Javier Ortega-Garcia, Andres Huergo, Julian Fierrezhttps://arxiv.org/abs/2508.08502
AirSignatureDB: Exploring In-Air Signature Biometrics in the Wild and its Privacy ConcernsBehavioral biometrics based on smartphone motion sensors are growing in popularity for authentication purposes. In this study, AirSignatureDB is presented: a new publicly accessible dataset of in-air signatures collected from 108 participants under real-world conditions, using 83 different smartphone models across four sessions. This dataset includes genuine samples and skilled forgeries, enabling a comprehensive evaluation of system robustness against realistic attack scenarios. Traditional an…