Passwords are important, even though we give weak passwords in many cases. But, there are risks if we try to eliminate passwords by using biometrics or one-time passwords. According to author Tom Olzak (independent security researcher and an IT professional), it is better to use available tools to manage passwords and find a middle ground between passwords and other factors of authentication. In general, we rely on users to establish their own passwords and force them to create strong passwords. It is found that biometrics like finger, voice, and facial recognition tend to have their own challenges.
Read more at: http://it.toolbox.com/blogs/adventuresinsecurity/practical-authentication-management-73187