How fingerprint scanning actually works
0:49
YouTubeNotHeffley
How fingerprint scanning actually works
Your phone isn't taking a "photo" of your finger; it is creating a high-resolution mathematical map of your unique biological "Minutiae." Most modern smartphones use Capacitive Scanning. Your finger ridges are conductive, but the air in the "valleys" is not. When you touch the sensor, thousands of tiny capacitors measure the electrical charge ...
4K views2 months ago
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