Here is a fingerprint sensor that lets you use a Raspberry Pi Pico for biometric applications. The IdentiPi Fingerprint Reader HAT has a 1.14-inch TFT display, 5-way joystick, programmable button, and everything you need to get started. It can be directly stacked on top of the GPIO header of the Raspberry Pi Pico.
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The 176 x 176p sensor array has 508 DPI spatial resolution. It has a 8.8 mm x 8.8 mm active sensing area.
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