1. An electronic device comprising: a finger biometric sensor; and a processor coupled to the finger biometric sensor and capable of performing a matching between first and second finger matching biometric data from the finger biometric sensor to generate composite finger matching biometric data having an associated composite match score, performing another matching between the composite finger matching biometric data and finger enrollment biometric data when the composite match score exceeds a composite match score threshold to generate an enrollment match score, and updating the finger enrollment biometric data with the composite finger matching biometric data when the enrollment match score exceeds an enrollment match score threshold.