Biometrics are biological identity traces of human beings often accessed via thumbs and other parts of human body to register an impression. These biological ‘fingerprints’ serve a wide variety of purposes including identification, verification, security, attendance, time keeping, etc. Government as well as private entities around the world are increasingly using biometrics for applications like access control . Various governments around the world are using it as a mandatory signature in national citizen registers and Ids. Biometric as a service market is expected to grow significantly as biometrics are far more secure than traditional forms of entry codes like pin, passwords, locks, etc. Individuals are not required to remember biometrics and the information can be carried anywhere easily. Additionally, biometrics are unique identity prints for each individual. Biometrics also leverages computing, imaging, mathematical and statistical methods to map a detailed...