Biometrics: yes or no? [dataset]

Martin Kákona
2016 Figshare  
About two years ago I was given my first fingerprint sensor. It was a simple optical sensor and I was supposed to test its quality. Results of my tests were unfavorable. I found out it was easy to log in with the sensor but I had problems to log off. It was necessary to wipe the glass surface after I logged in because otherwise the fingerprint remained on the sensor and repeatedly logged me into the system. So the user had to observe the log-in procedure and always wipe the sensor to remove the
more » ... ensor to remove the fingerprint. Following this negative experience I did not pay attention to biometrics for a quite a long while, lacking the interest and time to test other devices. Last year, however, I felt concerned to hear that several well-established companies introduced on the market chips for fingerprint sensors and launched commercial sale of attractively priced solutions for fingerprint-based log-in systems. This made me get back to the issue and investigate quality of these solutions. Explanations of Some Terms: Papillary lines are continual comb-like tubercles separating grooves on fingers, palms and soles. Marcants are irregularities on the papillary lines (discontinuities, branching and junctions). Optical sensor usually uses a prism. Sweat on the finger surface alters the refraction index in the points of contact with the prism.
doi:10.6084/m9.figshare.2072317.v1 fatcat:vacbg6ig4zabvm6otw7syooam4