Multimodal biometric authentication resolves no. of issues present in unimodal biometrics. There are number of ways for the fusion of different modalities in multimodal biometrics. In the present era of information technology, there is a need to implement authentication and authorization techniques for security of resources. There are number of ways to prove authentication and authorization. But the biometric authentication beat all other techniques. Biometric techniques prove the authenticity or authorization of a human being based on his/her physiological or behavioral traits.