US 12,242,584 B2
Authentication device, authentication system, and authentication method
Tomoki Inoue, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Filed by NEC CORPORATION, Tokyo (JP)
Filed on Sep. 6, 2023, as Appl. No. 18/461,946.
Application 18/461,946 is a continuation of application No. 17/970,734, filed on Oct. 21, 2022, granted, now 11,797,659.
Application 17/970,734 is a continuation of application No. 16/281,297, filed on Feb. 21, 2019, granted, now 11,593,465, issued on Feb. 28, 2023.
Application 16/281,297 is a continuation of application No. 15/317,195, granted, now 11,429,700, issued on Aug. 30, 2022, previously published as PCT/JP2015/002926, filed on Jun. 11, 2015.
Claims priority of application No. 2014-126353 (JP), filed on Jun. 19, 2014.
Prior Publication US 2024/0054202 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/32 (2013.01); H04L 9/32 (2006.01); H04L 9/40 (2022.01)
CPC G06F 21/32 (2013.01) [H04L 9/32 (2013.01); H04L 63/0861 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An authentication device comprising:
a memory configured to store instructions; and
a processor configured to execute the instructions to:
output a first instruction, the first instruction comprising first information and second information, the first information requesting the user to perform a first challenge, wherein the first challenge requesting the user to move the face of the user in a first direction, and the second information corresponding to a first period of time the face of the user keeps facing in the first direction of the first information;
output a second instruction, the second instruction comprising third information and fourth information, the third information requesting the user to perform a second challenge, wherein the second challenge requesting the user to move the face of the user in a second direction different from the first direction, and the fourth information corresponding to a second period of time the face of the user keeps facing in the second direction of the fourth information;
capture a first facial image of the user in response to the first instruction;
capture a second facial image of the user in response to the third-second instruction; and
output a result in a case where an amount of time the user keeps facing in the first direction after moving the face of the user towards the first direction satisfies the second information, an amount of time the user keeps facing in the second direction after moving the face of the user towards the second direction satisfies the fourth information, and a response to the first challenge and a response to the second challenge are correct.