i am a final year student.. planning to do an android application for my final year project. I plan to do an attendance management system app for lecturers, where i plan to conn
I think the best bet for you is neurotechnology embedded SDK for android. The SDK can actually achieve what you want to do. Goto Their Site Here
Your best bet may be to obtain a Motorola Atrix (the first version, which includes a fingerprint reader and an SDK to use it) or some other phone with the reader built-in (there may be some available now but I'm not certain).
If your only options are to use a USB-attached reader you will need to find hardware that has enough power to drive it as well as an SDK that can communicate with the sensor on Android via USB.
I would start here if you don't know much about making apps for android.
http://developer.android.com/training/index.html
And the SDK is here, I use the plugins for eclipse which sets up everything into a nice android project for you.
http://developer.android.com/sdk/index.html