ABSTRACT
For years, security to the network world has been based on what one knows-a password, a PIN, or a piece of personal information such as one’s mother’s maiden name. This is being supplemented with what one is (a biometric) that one can use with what one has (a card key, smart card, or token). Biometrics measure a person with respect to fingertip, eye, and facial characteristics. One is also measured on how one speaks and strokes keys and the way one walks. At a future date, one may be measured on the way one’s ear is formed and how one hears things.
