Patent ID: 9672339
Date: 2017-06-06
CPC Classifications: G06F

Claim:
1. A computer executed method comprising: acquiring heartbeat data, using an electrocardiogram (EKG)-based biometric apparatus, from electro-physiological signals belonging to an individual to establish a statistical norm for said individual, said statistical norm based on acquired heartbeat data to establish baseline heartbeat data for the individual; authenticating said individual based on newly acquired heartbeat data captured during a subsequent authentication; determining if said newly acquired heartbeat data is a deviation from said statistical norm belonging to the individual, wherein said deviation from said statistical norm is defined as a change exceeding a certain statistical norm threshold, wherein said statistical norm threshold is calculated as representing a value with a statistical probability, wherein said deviation is a difference from said statistical norm that has occurred a number of times indicative of less than a 5% chance that the deviation from said statistical norm is not physiologically based and is only due to random chance; keeping track of the number of said deviations beyond said statistical norm over time; keeping track of the number of times the individual has been authenticated over said time; determining a threshold frequency based on a number of said deviations with respect to a number of authentications over said time, wherein said number of said deviations is at least two; revising said statistical norm when the number of deviations exceeds the threshold frequency; and subsequently authenticating said individual using the revised statistical norm and subsequently acquired heartbeat data.