Biometrics have been used for identification for thousands of years, including fingerprints on clay tablets in ancient Babylon. The introduction of fingerprint scanning on the iPhone 5S catalyzed growth in the biometric industry, which is projected to be worth $30 billion by 2021. Consumers have driven adoption of biometrics in both public and private sectors, as biometrics provide greater security, simplicity and convenience than passwords alone. Biometrics offer a unique way to identify individuals and authenticate users across various applications and services.