The brain and the finger prints form at the same time so a correlational
link exist. Correlation is not causation. There is a researcher in
Israel who has done alot of work in this area. Sorry I don't remember his
name. He has written a book also along these lines. He has a web page.
His numbers are strong enough to suggest merit in the approach. While I
will not reject the approach out right, I believe your efforts would be
better spent in traditional directions.
Identical twins do not have idential print prints, yet personality
is similar on many but not all traits on a personality test.
Ron Blue