With technology infiltrating every aspect of modern living and our world becoming increasingly digitized, protecting confidential information becomes all the more difficult. Passwords and keys were once considered sufficient to provide data security but now they look increasingly feeble in the face of sophisticated hacker attacks. In fact, passwords are the weakest link in an organization’s security system. This is because they are shareable and even those with strong entropy can be cracked by a variety of methods. This has put the focus on biometric security as it is the only effective way to prove an individual’s identity.