Fingerprint sensors have become popular in consumer products, and the technology has been evolving. The capacitive type is thinner than the optical type and has the advantage of smaller size. However, it used to be more expensive, but now it is becoming cheaper. As for the accuracy of identification, it is related to the algorithm and fingerprint sensing area, there is little difference between the two types. The BM92S2222-A
capacitive fingerprint sensor supports 100 fingerprints. What we think the biggest difference with the optical type is that it does not light when capturing fingerprints.