Satya Sai Siva Rama Krishna Akula, Sumanth DasariDamer, NaserGomez-Barrero, MartaRaja, KiranRathgeb, ChristianSequeira, Ana F.Todisco, MassimilianoUhl, Andreas2023-12-122023-12-122023978-3-88579-733-31617-5468https://dl.gi.de/handle/20.500.12116/43283We present a diffuse optical tomography-based biometric system that is not dependent on external traits such as face, but rather interior anatomical information for better privacy and security. The Diffuse Optical Tomography (DOT) scanner is in the form of a wearable over the lower forearm and the wrist, where anatomical structures in the optical path of the scanner optodes serve as the basis for the unique biometric patterns. Our DOT scanner is low-cost and uses COTS Near Infrared LEDs and sensors. To supplement the DOT, our design also incorporates wrist vein imaging as a secondary modality. This paper details the design of the wristband, data collection, and machine learning-based analysis to show the utility of the DOT as a stand-alone biometric modality, and the efficacy of fusing DOT and wrist vein modalities. Our early experimental findings show promise, achieving a high area under the receiver operating characteristic curve (0.989).enContinuous authenticationBiometric performance measurement; Biometric sample quality; DatasetsEvaluationBenchmarkingText/Conference Paper