Fingerprint Sensor

I am searching those fingerprint sensors that I can use it by implementing my project before. The question is that I used a 256x256 grey scale sensor with bmp file captured before. This is not a new tech now. I just want to explore those software or digital signal inside of techs. Some issues I need to solve them before I implement it by linux program:
a) translate Matlab again into C++ codes
b) apply dsp tool kit especially fft and convolution to implement matlab codes
c) find a hardware platform for this basic dsp and also can accept directly digital format like CCIR-656 from fingerprint sensor
d) linux learning
e) etc

Gesture Recognition / Microsoft's project Natal

You must see this news about Project Natal. It's really cool. But actually it has been developed for more than 20 years in the universities. Of course we're expecting the famous companies can make this come true into current life. The New York Times has a report and video for this. Also this application can be promoted like this. It's incredible for future shopping. And also if you want to know that how this techs can be brought into game world. You can visit http://www.natalxbox360.com/ to know all of those news around.