[oostevo]

Indeed.

For further clarity: The retina is the thin layer of cells at the back of your eye that pick up light. The iris is the colorful ring on the front of your eye.

A retina scan is thing most people wouldn't experience outside of an eye doctor's office. It requires really close proximity with the scanner, and it's very clear that's it's happening.

Phones, including the Galaxy 8 that the author of the article mentions, use iris scanning.