Authors:

If someone hacks your password, you can change it - as many times as you want. You can’t change your fingerprints. You have only ten of them. And you leave them on everything you touch; they are definitely not a secret.

"Sen. Al Franken: iPhone Fingerprint Scanner Raises ‘Significant Privacy Questions’" by Gerry Smith, www.huffingtonpost.com. September 20, 2013.
If someone hacks your password, you can change it - as many times as you want. You can’t change your fingerprints. You have only ten of them. And you leave them on everything you touch; they are definitely not a secret.