measure blood flow or check for correctly arrayed ridges at the edges of the fingers.
-Analyses the characteristics of an individual's face image captured through a digital video camera. It also used for recognizing potential threats (whether terrorist, scam artists, or known criminals).
Hand Geometry Scanning.
-Hand scanning involves the measurement and analysis of the shape of one's hand.
-It is possible to devise a method by combining various individual features and measurements of fingers and hands for verification purposes.
-Analysis the features that exist in the coloured tissues surrounding the pupil which has more than 200 points that can be used for comparison, including rings, furrows and freckles.
-The scans use a regular video camera can be done from further away than a retinal scan.
-It will work perfectly fine through glasses and in fact has the ability to create an accurate enough measurement that it can be used for identification purposes.