Eye-scanning on a massive scale is currently being carried out in India, in efforts to have permanent records of poor people. From a report in the New York Times by:Lydia Polgreen:

“KALDARI, India — Ankaji Bhai Gangar, a 49-year-old subsistence farmer, stood in line in this remote village until, for the first time in his life, he squinted into the soft glow of a computer screen.

His name, year of birth and address were recorded. A worker guided Mr. Gangar’s rough fingers to the glowing green surface of a scanner to record his fingerprints. He peered into an iris scanner shaped like binoculars that captured the unique patterns of his eyes.

With that, Mr. Gangar would be assigned a 12-digit number, the first official proof that he exists. He can use the number, along with a thumbprint, to identify himself anywhere in the country. It will allow him to gain access to welfare benefits, open a bank account or get a cellphone far from his home village, something that is still impossible for many people in India.”