Comment Iris Scanning Info (Score 2, Informative) 229
For those who would prefer not to wallow in self induced ignorance, (both of you), here's a few links you might find relevant.
http://en.wikipedia.org/wiki/Iris_recognition
http://www.findbiometrics.com/Pages/iris_articles/iris_1.html
http://www.iridiantech.com/index2.php
The rest of us may now return to mindless ranting. Enjoy!