The way you view the world is unique, so why not use it to identify you?My first thought was to compare this to using a handwritten signature as a biometric. The biometric consists of the unique way in which someone moves a part of their body.
A company in Israel has developed a security system that does just this--exploiting a person's unique pattern of eye movements to identify them. Most biometric security systems measure physical features that are constant, such as fingerprints or iris patterns. An eye-tracking system has the potential to be harder to fool and easier use, its creators say.
This would seem to be analogous to handwriting analysis because the way the system induces a subject's eye movements (by visually tracking a moving icon) isn't the same in each verification, the way your signature is meant to be (approximately) the same each time you sign something.
