Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-fingerprinting-7289bc1a8a85

What do optical fingerprint scanners use?

A digital camera to take a visual image.

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  1. A digital camera to take a visual image ✔
  2. High frequency sound waves
  3. Temperature differences

Why: Optical scanners take a visual image of the fingerprint using a digital camera.

Huh, didn't know that: Optical scanners take a visual image of the fingerprint using a digital camera.

The dad joke
Optical scanners have a clear view.
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References

Answer: A digital camera to take a visual image. Optical scanners take a visual image of the fingerprint using a digital camera.

  1. Fingerprint en.wikipedia.org/wiki/Fingerprint
    Optical scanners take a visual image of the fingerprint using a digital camera.
    Checked 2026-11-07.

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