information from different modalities can be consolidated, or fused, at the following levels Feature. Either the data or the feature sets originating from multiple sensors and/or sources are fused; Match score. The match scores generated from multiple trait-matching algorithms pertaining to the different biometric modalities are combined, and Decision. The final decisions of multiple matching algorithms are consolidated into a single decision through techniques like majority voting. Biometric researchers believe integrating information at earlier stages of processing (such as at the feature level) is more effective than having integration take place at a later stage (such as at the score level).