Abstract: A method for authentication of an individual based upon biometric mode and biometric instance data comprising the steps of: storing at least a first biometric data having at least one biometric data mode and at least two biometric data instances capable of identifying an individual associated with the first biometric data; creating an at least second biometric data having the at least one biometric data mode and the at least two biometric data instances capable of identifying a specific individual associated with the second biometric data; determining which of said at least one biometric data mode and said at least two biometric data instances are to be compared; in accordance with predetermined rules; and comparing the at least second biometric data to said at least first biometric data to determine whether the selected biometric data mode and selected biometric data instances of the at least first biometric data corresponds to the selected at least one of biometric data mode and selected at least two biomet