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1. (WO2018199832) FINGERPRINT AUTHENTICATION SYSTEM AND METHOD PROVIDING FOR REDUCED LATENCY

Pub. No.:    WO/2018/199832    International Application No.:    PCT/SE2018/050394
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 20 01:59:59 CEST 2018
IPC: G06K 9/00
G06F 21/32
Applicants: FINGERPRINT CARDS AB
Inventors: WITH PEDERSEN, Morten
HANSEN, Morten
Title: FINGERPRINT AUTHENTICATION SYSTEM AND METHOD PROVIDING FOR REDUCED LATENCY
Abstract:
A fingerprint image is acquired (106), and it is determined (1 10) if the finger (15) is still touching the sensing surface. When the finger (15) no longer touches the sensing surface, the user is authenticated (1 12) based on one or several fingerprint image(s) acquired so far. When it is determined that the finger (15) still touches the sensing surface, a quality measure is determined (1 14) for the fingerprint image. When the quality measure indicates that a quality of the fingerprint image fulfills a predefined quality criterion, the user is authenticated based on one or several fingerprint images acquired so far. When the quality measure indicates that the quality of the fingerprint image fails to fulfill the predefined quality criterion, a subsequent fingerprint image is acquired. When the finger (15) still touches the sensing surface, and the quality measure indicates that the quality of the subsequent fingerprint image fulfills the predefined quality criterion, the user is authenticated based on one or several fingerprint images acquired so far including the subsequent fingerprint image.