Like fingerprints, a person's iris is unique. An iris scan is accomplished by a system that uses a device like a digital camera to record details about a person's iris. The image is converted to an iris code and stored in a database for future use.
Iris scan
Iris scan
Iris scan
Iris scan
Iris scan
Iris Scan
Iris Scan
1) Retina scan 2) Iris scan
Mexico does.
A signature can be forged much more easily than an iris scan
An iris scanner uses visible and near-infrared light to scan the iris of an eye. The iris scanner takes a picture and uses it to compare that to an image already stored in a database to see if there is a match. Since everyone's eyes are unique, iris scanners are becoming more popular for identifying people in security situations.