Why Is The Multimodal Biometric System Universal

• Universality: If a person cannot present a trait to the multimodal biometric system due to disease or disability, the system can use other biometric traits for the recognition task, so we can say that the multimodal biometric system is universal in nature.
• Reliable recognition: the multimodal biometric systems integrate multiple biometric modalities and each single trait can offer additional evidence for the recognition task. For example, the voice of two individuals can be similar. So, the unimodal voice recognition system might lead to a false recognition. However, if we add for the same biometric system other modality such as iris or fingerprints, the recognition rate of the system would be certainly increased, because it is nearly impossible