How much do you know about fingerprint lock terms?

Today, family intelligence has gradually become a trend. Smart door locks are hot items in smart homes. For friends who buy fingerprint locks, understanding the basic performance of products is also essential. How much do you know about fingerprint lock common terminology? Know what is "resolution" and what is "false recognition rate"? Today, Zhijianet Xiaobian gives you a brief introduction to some of the fingerprint lock industry terminology. Can be handy when buying.

1, what is the resolution

The resolution (dpi) is an interpretation of the fingerprint reader's fingerprint read head. Like the camera's pixel principle, the higher the pixel, the clearer it is. The higher the resolution of the fingerprint reader, the faster the reaction is. The more accurate, the more stable the performance.

According to the fingerprint lock industry standard, the resolution of the fingerprint reader is 500 dpi, which is lower than the resolution of the fingerprint reader. The reaction speed, recognition accuracy, and stability cannot be guaranteed. Under normal circumstances, fingerprint lock with a resolution of 500dpi, the opening time is generally about 1 second. Below this value, the door opening speed needs 1 second or even a few seconds.

2. What is misrecognition rate?

"False Accept Rate" (FAR), also known as false acceptance rate, is a key technical indicator of the fingerprint identification system. It represents the probability that a fingerprint that should not be matched is accepted by the system. Simply put, the probability of opening a fingerprint lock with a finger that does not have a fingerprint. For example, a person's fingerprint is not recorded in the fingerprint lock, but when he uses his fingers to open the door, the fingerprint lock considers that his fingerprint information matches a certain fingerprint that has been entered, and if it is unlocked automatically.

The level of misrecognition is related to the security of the fingerprint lock. The lower the misrecognition rate is, the safer the fingerprint lock is, and the less secure it is. As far as the fingerprint lock industry is concerned, the common misconception rate is about one millionth, and the safety factor is relatively high.

3, what is the rejection rate?

"FRR (False Reject Rate)", also known as "rejection rate", is another key technical indicator of the fingerprint identification system, indicating the probability that fingerprints with the same source are rejected. In other words, fingerprints have already been entered, but when the fingerprints are used, the system considers them to be fingerprints that are not stored so that the probability of opening the door cannot be reached. For example, some people usually use fingerprints to open the door when they are good, but occasionally there will be one or two fingerprint locks will not open the door after the situation.

The lower the refusal rate, the more stable the fingerprint lock, and vice versa. For the current fingerprint lock industry, the general refusal rate is about 1 percent, and the stability factor can be increased. The effective way to solve the problem of fingerprint rejection is to press several times more fingerprints.

4. What is live recognition technology?

That is, according to the uniqueness and stability characteristics of biological living fingerprints, real living fingerprint identification technology can be used to identify skin leather fingerprints, and can identify fine skin temperature and humidity to ensure that only living organisms can recognize advanced technologies. Its most important advantage is that it avoids the security and technical problems of copying fingerprints and dry fingerprints.

For example, white-collar workers' self-made fingerprint film for punching cards can only be used for fingerprint locks with biometric biometric fingerprint recognition technology. Only real human fingerprints can be turned on.