September 13, 2026
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How Do Fingerprint Scanners Work?

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A fingerprint scanner uses your finger like a secret password.
How Do Fingerprint Scanners Work?
A fingerprint scanner uses your finger like a secret password. On the tip of every finger, there are tiny lines, ridges and swirls. The pattern on your fingerprint is unique, which means no one else has the same one. When you first set up a fingerprint lock, the scanner takes a picture or special re
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