how does it work

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how does it work technology

Question by carlyle (6)

How do retinal scanners work?

Are they really in use in government buildings?

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Answer by kevincai96 (669)

Retinal scanners work by passing a laser (or other beam of strong light) through the first layers of the eye. Then, the reflections from the retina (back of the eye) are recorded with a camera. The pattern of blood vessels and structures is saved for later comparison. Only some government buildings use them, but not all.

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Answer by HilaryC (1382)

Retinal scanners are the same as taking your fingerprint. No one has the same two retinas. I've heard that a very few amount of employers are using them now.

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