Patent ID: 7844082

Claim:
A method for a computing device to perform authentication of a user by means of biometric data, said authentication being provided to permit or deny user access to controlled resources, the method comprising the steps of: receiving a biometric data set from a user; comparing the received biometric data set to a reference biometric data set for said user and evaluating if the received biometric data set is within a reference region, wherein the reference region represents a region associated with a reference biometric data set for said user; comparing the received biometric data set to a blackout biometric data set for said user and evaluating if the received biometric data set is within a blackout region, wherein the blackout region represents a region associated with at least one blackout biometric data set that was previously received and positively authenticated for said user; and issuing a positive authentication to allow user access to controlled resources if the received biometric data set is within the reference region, but outside the blackout region.