Regarding iris recognition, which statement is accurate?

• A. iris recognition has high FARs
• B. iris recognition technology is expensive
• C. iris recognition scans the eye with lasers
• D. All of the above

Answer: (C)

Iris recognition relies on capturing a detailed image of the iris through optical scanning so the unique pattern can be used for matching. The essential idea is to obtain iris data by scanning the eye to create a biometric template. The option that asserts iris recognition scans the eye describes this core action, making it the best fit. In practice, illumination is often near-infrared and captured by a camera, not necessarily a laser, but the fundamental operation is the scanning to extract iris data. General claims about high false-accept rates or universal expense aren’t reliable across all implementations, so they don’t define iris recognition as clearly.