The function of smart locks is also known as the identification method. It refers to the function that can judge and recognize the identity of real user. It includes the following four methods:

1. Biometrics

Biometrics is the function of using human biological characteristics for identification. At present, fingerprint, face, finger vein recognition, etc. are the most widely used. Among them, fingerprint recognition is the most widely used, and face recognition began to be more and more popular in the second half of 2019.

For biometrics, three indicators shall be paid attention to during the purchase and selection.

The first indicator is efficiency, which is the speed and accuracy of recognition. The indicator that accuracy needs to focus on is the false reject rate. In short, it whether can accurately and quickly recognize your fingers print.

The second indicator is security. There are two factors. One is the false accept rate, the fingerprints of false user are recognized as the fingerprints that can be entered. This situation rarely occurs in smart lock products, even if it is Low-end and low-quality locks. The other is anti-copying. One thing is to protect your fingerprints information. Another thing is to remove any objects in the lock.

The third indicator is the user capacity. At present, most brands of smart locks can inputting 50-100 fingerprints. Inputting 3-5 fingerprints of everyone to prevent fingerprint failure of opening and closing of smart locks.

1. Password

The password is the number, and the identification of the password is the identification of the complexity of the number, and the password of the smart lock is judged by the number of digits and the number of vacant digits in the password. Therefore, we recommend that the length of the password should not be less than six digits, and the length of the dummy digits should not be too long or too short, generally within 30 digits.

1. Card

This function is complicated, it includes active, passive, coil, CPU, etc. As a consumer, as long as you understand two types-M1 and M2 cards, that is, encryption cards and CPU cards. The CPU card is the safest, but it is more troublesome to use. In any case, these two types of cards are commonly used in smart locks. At the same time, the most important thing the card is the anti-copying properties. The appearance and quality can be ignored.

1. Mobile App

The network function content is complex, While in the final analysis, it is the new function derived from the combination of the lock and mobile or network terminals such as mobile phones or computers. Its functions in terms of identification include: network activation, network authorization, and smart home activation. Smart locks with network functions generally have a WIFI chip and do not need a gateway. Those that are not WIFI chips must have a gateway.

At the same time, everyone shall pay attention that those connected to the mobile phone may not have network functions, but those with network functions will definitely be connected to the mobile phone, such as TT locks. If there is no network nearby, the mobile phone can be connected to the lock via Bluetooth. And many functions can be realized, but the real functions such as information push still need the cooperation of the gateway.

Therefore, when you select smart lock, you shall pay more attention to the identification method of the smart lock and choose the right one that suits you.