Liveness detection methods in biometric systems
Liveness detection methods are important countermeasures against falsification of biometric characterictics. These methods ensures that biometric samples captured by biometric system are aquisited from live individual. A few results of resarches on efficiency of these methods are published. For this reason biometric system users meet with difficulties when selecting liveness detection methods according with their security requirements. In this paper liveness detection methods for different biometric modalities are analysed. Also future directions for research in this importan field are pointed out.