Cheese! Researchers zoom in on a bystander in the study. Credit: R. Jenkins and C. Kerr/PLOS One A person can learn a lot from looking deeply into someone's eyes---perhaps even enough to identify suspects of a crime. Zooming in on a person's cornea in a high-resolution photo can reveal an astounding degree of detail of what was behind the camera, new research shows. The technique could eventually help identify criminal suspects.
To test how effective a mirror the cornea was, researchers took passport-style photos of college students in the lab. Bystanders were placed a few feet away, facing the subjects, while the photos were being taken. When the researchers zoomed in on the subjects' eyes in the photos, they were able to see pixelated versions of the bystanders' faces. The images were only about 30 pixels wide and 50 pixels tall, on average. That means the reflection of a bystander's ...
