This. Fingerprint scanners are notoriously unreliable. Either they reject the real person's fingerprint way too often, or they accept way too many similar finge

This. Fingerprint scanners are notoriously unreliable. Either they reject the real person's fingerprint way too often, or they accept way too many similar fingerprints. A real key is 100% reliable if you have it and 100% secure if you don't.