How Does An Optical Fingerprint Scanner Work?.Therefore, it is easy to adapt the library that you find here for other models as well. Despite using different sensing techniques and form-factors, they all share the same interface and command set. R307 is an optical fingerprint scanner module from the R30X series produced by a Chinese vendor called Hangzhou Grow Technology Co., Ltd. In this tutorial, we will learn how an Optical Fingerprint Scanner works and how we can interface the R307 fingerprint scanner module to an Arduino board. There exist many methods to digitize fingerprints from forensic methods to ultrasound scanning. Before we can process a fingerprint pattern with a computer, we must “capture” it. But computers are good at recognizing and matching patterns very fast and accurately. But just by holding someone’s hand and staring at their fingers can’t be practical □ we’re not good at it. Fingerprints are one of the many unique biometric signatures we can use to identify people very accurately.
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