Biometric identification systems can be attacked at many vulnerable points. One of the vulnerable points is biometric database. Biometric authentication system can be easily spoofed by applying stolen protected template at matcher sub-system of biometric identification systems. This type of malicious manipulation is termed as replay attack. We proposed an application of visual cryptography technique in biometric authentication system which provide security against replay attack and also generate trustable biometric authentication system. Visual cryptography concept can be used to generate two shares based on protected template. One share (share 1) will be stored in database and another (share 2) is in secondary memory (RF ID card). So, stolen share 1 is not useful for replay attack. Also without use of share 2 one cannot generate original protected template. Therefore, system provides security against replay attack and it is trustable.
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