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Vascular biometrics is gaining popularity in academic research, industrial systems, and public acceptance mainly because vein patterns are not exposed and thus offer more security against presentation attacks than traditional biometric traits. Likewise, wearable systems have begun to enter our lives more widely, primarily due to their convenience and the possibility of employing them in the framework of two-factor authentication mechanisms. This paper presents a new wearable vascular biometrics technology: a dorsal finger vein biometric scanner that can be worn as a ring and used for continuous user recognition. This device evolves a project developed for finger vein biometrics, and it is fully open-source. We provide all the necessary materials to replicate the device: the circuit schematics, the printed circuit board Gerber, the components list, the models for the 3D-printed case, and the software required for device control and database management. We have collected and made available a database of 30 subject/180 class dorsal finger vein images, with preliminary recognition results with HTER = 14.6%, using basic preprocessing and the Maximum Curvature/Miura Match pipeline, indicating potential for further research. |
