CPC G06V 40/1371 (2022.01) [G06F 21/32 (2013.01); G06V 10/761 (2022.01); G06V 40/13 (2022.01); G06V 40/1353 (2022.01); G06V 40/50 (2022.01)] | 12 Claims |
1. A method of authenticating a user using an electronic device comprising a fingerprint sensor, the method comprising:
an enrolment process comprising:
obtaining first fingerprint data of a first hand using the fingerprint sensor;
determining, and storing, features of first fingerprints of respective fingers of the first hand; and
determining, and storing, for each one of the possible pairs of first fingerprints, an indication of plausible displacement between the two first fingerprints on the fingerprint sensor;
a comparison process comprising:
obtaining second fingerprint data of a subsequent hand using the fingerprint sensor;
determining features of second fingerprints of respective fingers of the subsequent hand;
determining a degree of similarity between each one of the first fingerprints and each one of the second fingerprints based on a comparison of the respective features;
identifying pairs of fingerprints, each pair comprising one of the first fingerprints and the second fingerprint which has the highest degree of similarity to said one of the first fingerprints; and
determining a plausibility of the displacement of each pair relative to each of the other pairs based on the stored indications of plausible displacement between the possible pairs of first fingerprints; and
controlling authentication of the user based on the determined plausibility of the displacement of each pair of fingerprints.
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