What is a solid-state fingerprint reader one major family of?

Fingerprint readers.

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Why: Fingerprint readers are grouped into solid-state and optical families.

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References

Answer: Fingerprint readers. Fingerprint readers are grouped into solid-state and optical families.

  1. Fingerprint en.wikipedia.org/wiki/Fingerprint
    All the proposed methods can be grouped into two major families: solid-state fingerprint readers and optical fingerprint readers.
    Checked 2026-11-07.

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