Fingerprint Attendance System Using Arduino and Wi-Fi Module - Search Videos

How fingerprint scanning actually works

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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 ...

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