| 1 | Look at your eyes - the irises. | |
| 2 | Sometimes you also get a yellow circle around the iris. | |
| 3 | The iris of the eye is photographed from up to one meter away. | |
| 4 | The protective bit at the front of the eye is the cornea and once light passes through this membrane, it passes through the iris. | |
| 5 | There' s software that' s smart enough to recognize people by their faces, or by their irises. |