The illumination for finger scanning is automatically adjusted according to fingerprint’s characteristics to optimize the quality of the captured image. The finger scanning window is a 13mm thick crown glass prism. The finger scanning window is a crown glass with a thickness of 13mm. It is much more reliable and robust compared to any semiconductor type fingerprint sensor, claims the company.
According to the company, the finger is illuminated by 4 infra-red LEDs during scanning and the light intensity is automatically adjusted according to scanning fingerprint’s characteristics (wet, dry, blurred, etc) to optimize the quality of the captured fingerprint image.