Optical security systems [electronic resource] : 31 August-2 September, 2005, Warsaw, Poland / Zbigniew Jaroszewicz, Sergei Y. Popov, Frank Wyrowski, chairs/editors ; organized by SPIE Poland Chapter, SPIE Europe, Warsaw University of Technology (Poland) ; sponsored by NEMO--Network of Excellence on Micro-Optics [and] European Office of Aerospace Research and Development ; cooperating organization, Military University of Technology (Poland) ; published by SPIE--the International Society for Optical Engineering.