Talk about the principle of Fingerprint Scanner

Speaking of Fingerprint Scanner, I believe everyone should be familiar with it, because in the 21st century, the technological era of 2019, Fingerprint Scanner are no longer a secret. I think many fields have begun to use Fingerprint Scanner. So we know what Fingerprint Recognition Time Attendance is, so what is the principle of a Fingerprint Scanner?

After being certified by the conductive principle of the touch part between the finger and the fingerprint head, the fingerprint recognition rate is high, the anti-counterfeiting ability is strong, the size is thin and small, and it is easy to be embedded in other product terminals. The disadvantage is that it is more expensive than optical fingerprints and is easily affected by static electricity. Impact, relatively simple optical damage.
Authenticity rejection rate: It is mainly the probability that the correct fingerprint can be quickly recognized. This is mainly related to the user experience issue; False recognition rate: It is the probability that the fake fingerprint can also open the lock, which is related to the user's security. question. So relatively speaking, these two are very important, and this is one of the key reasons why the prices of the same model of Fingerprint Recognition Time Attendance on the market are so different. Therefore, when purchasing Fingerprint Recognition Time Attendance, you must choose the identification chip. Don't be greedy for petty gains.
Optical fingerprints are based on the principle of light reflection, are cheap, not easy to wear, and are not affected by static electricity; the disadvantage is that the size of the collection head is large, and the recognition rate of dirty fingers or finger surfaces is very low, compared with semiconductor fingerprint recognition. The recognition rate is low.
The fingerprint recognition technologies currently on the market are generally divided into optical Fingerprint Recognition Time Attendance; generally, most of the fingerprints with light are optical fingerprint recognition, and the others are mostly semiconductor fingerprints. One thing to be clear here is that these residual fingerprints are often used for evidence collection. Fingerprints of this level cannot be used for Fingerprint Recognition Time Attendance, especially standard semiconductor fingerprint recognition door locks.