US 12,393,650 B2
Authentication system, authentication device, authentication method and program
Yeongnam Chae, Tokyo (JP)
Assigned to Rakuten Group, Inc., Tokyo (JP)
Appl. No. 17/057,927
Filed by Rakuten Group, Inc., Tokyo (JP)
PCT Filed Jun. 28, 2019, PCT No. PCT/JP2019/025872
§ 371(c)(1), (2) Date Nov. 23, 2020,
PCT Pub. No. WO2020/261545, PCT Pub. Date Dec. 30, 2020.
Prior Publication US 2024/0256640 A1, Aug. 1, 2024
Int. Cl. G06F 21/31 (2013.01); G06F 21/44 (2013.01)
CPC G06F 21/31 (2013.01) [G06F 21/44 (2013.01); G06F 2221/2103 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An authentication system, comprising at least one processor configured to execute computer program code, the computer program code comprising:
first authentication code configured to cause the at least one processor to perform authentication based on input authentication information, wherein the input authentication information is biometric face information;
determination code configured to cause the at least one processor to determine, based on the input authentication information, whether there are a plurality of users for which there is a possibility of successful authentication;
requesting code configured to cause the at least one processor to request, when it is determined that there are the plurality of users, input of additional authentication information that is based on a difference in user information on each of the plurality of users; and
additional authentication code configured to cause the at least one processor to perform additional authentication based on the input additional authentication information,
wherein the plurality of users comprises a first person and a second person, the difference is found before the performing the additional authentication, and the difference is a difference between first numerical data of the first person and second numerical data of the second person,
the computer program code further comprising second determination code configured to cause the at least one processor to perform repeating a determination comparing first user data of the first person with second user data of the second person until the difference is found, the difference corresponding to specific first user data of the first user; and the request is configured to obtain from the first person the specific first user data to confirm an identity of the first user.