Patent ID: 6895514
Filing Date: 2005-05-17
Classification: G06F

Abstract:
1. A security method requiring entry of a password by an authorized user before an action will be allowed, said password comprising a plurality of actions in a predetermined sequence, said method comprising the steps of: (1) creating a sequence model of an expected password, said model comprising information defining a plurality of acts occurring in a specified sequence; (2) creating a temporal model of time intervals between said acts comprising said password; (3) comparing the sequence model to the password entered by the user and generating a first score from a first accuracy measurement of the sequence of actions of the password entered by the user as compared to the model sequence; (4) comparing the temporal model to time intervals of the entered password and generating a second score from a second accuracy measurement of the time intervals of the password entered by the user as compared to the model time intervals; (5) generating a PASS/FAIL output based on a combination score calculated from said first and second scores, wherein said combination score is dynamically adjusted to increase the ratio of said second score to said first score as the number of times said authorized user enters said password increases.