ODM USB Small Optical Sensor Fingerprint Reader Scanner  

There are three common methods of fingerprint identification, namely ultrasonic, optical and semiconductor (capacitance), but the basic principle of the three methods is to compare the fingerprint to be identified with the fingerprint entered to determine whether it meets the requirements. The difference between optics and semiconductors lies in the different ways of replication. The former uses optical scanning, and the latter uses finger grooves to record the different fingerprints of the electrical signals fed back by the capacitive sensor. In fact, there is no absolute difference between the advantages and disadvantages. Huifan Tech, with HFSecurity as brand, is a biometric manufacturer since 2005, focusing on biometric verification, including time attendance, access control, other flexible identification. Besides our ready hardware, we have rich experience in OEM and ODM orders. Product Description chongqing huifan technology co., ltd after long-term…