公开(公告)号：US12149622B2

公开(公告)日：2024-11-19

申请号：US17520315

申请日：2021-11-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Dongku Han ,  Lakshmi Prasanna Jasti ,  Hyeonwoo Noh ,  Keunyoung Park ,  Sungbo Ahn ,  Jiyoung Yu ,  Eunjin Youn ,  Bora Hyun ,  Jongchul Kim ,  Jaesik Oh

IPC: H04L29/06 ,  G06F11/34 ,  H04L9/08 ,  H04L9/32

Abstract: A user log information output system includes a first user device configured to generate first user information by encrypting a unique identification (ID) of a first user according to a scheduled time; a first user server configured to generate first server information including a server group code of a hierarchical server group; a second user device configured to receive real-time token information through communication with the first user device, the real-time token information being generated based on the first user information and the first server information; and a second user server configured to generate proximity log information regarding the first user by reading the first user information and the first server information of the real-time token information received from the real-time token information from the second user device.