Iris Recognition uses a camera which is similar to that in a home video camcorder to capture an image of the Iris. The Iris is the colored ring around the pupil of the eye and is the only internal organ visible from outside the body. This allows for a non intrusive method of capturing an image since we simply take a picture of the Iris from a distance of 3 to 10 inches away.
Retinal Scanning requires a very close encounter with a scanning device that sends a beam of light deep inside the eye to capture an image of the Retina. Since the Retina is located on the back of the eye, retinal scanning was not widely accepted due to the intrusive process required to capture an image.
See attachments for a more detailed explanation of the difference between the Iris and Retina.
File Attachment(s) :
Iris vs Retina.doc (File size:170.0KB)