US 12,271,453 B2
Augmented handwritten signature authentication method and electronic device supporting same
Ki-Yoong Hong, Seoul (KR)
Assigned to SECUVE CO., LTD., Seoul (KR)
Appl. No. 17/269,934
Filed by SECUVE CO., LTD., Seoul (KR)
PCT Filed Dec. 30, 2020, PCT No. PCT/KR2020/019401
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/137620, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 10-2019-0179597 (KR), filed on Dec. 31, 2019.
Prior Publication US 2022/0366726 A1, Nov. 17, 2022
Int. Cl. G06V 40/30 (2022.01); G06F 3/0482 (2013.01); G06F 3/04883 (2022.01); G06F 21/32 (2013.01)
CPC G06F 21/32 (2013.01) [G06F 3/0482 (2013.01); G06F 3/04883 (2013.01); G06V 40/376 (2022.01); G06V 40/394 (2022.01)] 6 Claims
OG exemplary drawing
 
1. An augmented handwritten signature authentication method, comprising:
receiving a primary touch input corresponding to a primary handwritten signature input of a user;
receiving, after the primary handwritten signature input is received and a specified time period elapses, a secondary mark input of the user;
obtaining primary touch position data corresponding to the primary touch input, and the secondary mark input;
performing user authentication by comparing the primary touch position data corresponding to the primary touch input and secondary touch position data related to at least part of the secondary mark input with prestored primary touch registration data and secondary touch registration data, respectively;
performing comparison to determine whether the secondary touch position data overlaps with part of the primary touch position data; and
determining the secondary touch position data as valid data when at least part of the secondary touch position data overlaps with the at least part of the primary touch position data, or determining the secondary touch position data as invalid data when the at least part of the secondary touch position data does not overlap with the at least part of the primary touch position data.