Biometric ID Management and Multimodal Communication : Joint COST 2101 and 2102 International Conference, BioID_MultiComm 2009, Madrid, Spain, September 16-18, 2009, Proceedings - Julian Fierrez, Javier Ortega-Garcia, Anna Esposito, Andrzej Drygajlo, Marcos Faundez-Zanuy ((Lecture Notes in Computer Science))