公开(公告)号：GB2522864A

公开(公告)日：2015-08-12

申请号：GB201402000

申请日：2014-02-06

Applicant: IBM

Inventor： PIPES STEPHEN DAVID ,  HARDILL BENJAMIN JOHN ,  GEORGE DAVID PETER ,  SMART ROBERT STEVEN

IPC: G06F21/36 ,  G06F21/31 ,  H04L9/32

Abstract: Authenticating a user by displaying a dynamic image, detecting a user interaction with the image, detecting the duration of the user interaction and comparing the detected user interaction and the detected duration with stored reference values and authenticating the user if they match. The dynamic images may be a sequence of images or a video. User input may be a touch or a click and may include movement, the interaction may be used to indicate recognition of an event which indicates the start of a time period and then to indicate the occurrence of second event known to the user and displayed. The user may interact by following an object, the time the object is followed and what object was followed may be used for authentication. Allows a user to indicate knowledge of the time period of a significant event which is provided to the authentication scheme in the form of a time period.