Ever have trouble remembering your password? With the rise of digital economy and social media, many people have dozens of accounts. Humans are incapable remembering strong, unique passwords for dozens of accounts. Passwords form the foundation of security from physical security such as entering a building to online security such as internet banking.

However, passwords have a fundamental flaw. They can be compromised, either stolen or in some cases, simply guessed and used to impersonate another person. Biometrics offers the possibility to recognize a person through something that is inherent to that individual.