JPR_V2_N1_RevP1 Ria Mathews Bino Thomas Journal on Pattern Recognition 2350-112X 2 1 29 33 Fingerprint, Biometric Templates, Virtual Identity, Authentication, Minutiae, Privacy Protection Biometrics has an important role in privacy protection, when compared to traditional privacy protection methods like tokens, PIN, passwords etc. With the widespread use of fingerprint techniques in authentication systems, privacy protection of the fingerprint becomes an important issue. Traditional encryption is not sufficient for fingerprint privacy protection because decryption is required before the fingerprint matching, which exposes the fingerprint to the attacker. In recent years, significant efforts have been put into developing specific protection techniques for fingerprint. The main objective of this paper is to make a study on mixing fingerprints and how they are used in privacy protection of fingerprints. In this paper various methods of biometric template protection of fingerprint by mixing the fingerprints or multi-biometrics has been surveyed. March - May 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3374