I mean, of course we cant rely on a website. I just would like to know if there is someone already working on this idea.
I doubt there is any serious work beeing done in that direction. The main problem with fingerprints is that you leave them literally everywhere. Every glass you use could be used to gather your fingerprints. You would end up with a private key which is only protected by a password. We already got that, its called a brainwallet.
That makes sense, it definitely isnt a safe way to store a private key. I was trying to think about someway to store a private key without the need of writing things somewhere(that can get lost) or of remembering long paraphrases.