A fingerprint can be a personal password or it can be a government ID, but it can’t be both. Since the U.S. government already has something like 200 million fingerprints on file, and many foreign governments collect fingerprints whenever you travel, these fingerprints are sometimes leaked en masse (https://en.wikipedia.org/wiki/Office_of_Personnel_Management...), and because they can never be changed, biometrics aren't my personal choice for a secure method of authentication.