I will inform you, that here (
http://www.optel.pl/top.htm) you will find some interesting links to
papers concerning faking (smoothing) of biometric devices, and here
(
http://www.optel.pl/article/english/livetest.htm) the information, why ultrasonic holography is
better from this point of view.
If somebody knows about links, that I haven't found, I would be grateful for any information about
it.
Wieslaw Bicz
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