A fingerprin
t lock is a smart lock that uses fingerprint recognition technology to unlock the door. The security indicators of fingerprint locks mainly include the following aspects:
* Fingerprint recognition performance: The recognition performance of the fingerprint lock reflects whether the fingerprint lock can accurately and quickly identify the user’s fingerprint to avoid misrecognition or rejection. Fingerprint recognition performance is usually measured by the true rejection rate (FRR) and false recognition rate (FAR). The rejection rate refers to the probability that the fingerprint lock refuses to identify the fingerprint of a legitimate user, and the false recognition rate refers to the probability that the fingerprint lock incorrectly identifies the fingerprint of an illegal user. Generally speaking, the truth rejection rate and the false recognition rate are inversely proportional, that is, the lower the true rejection rate, the higher the false recognition rate, and vice versa. Therefore, the security level of fingerprint locks should comprehensively consider the authenticity rejection rate and false recognition rate. According to relevant standards, the security level of fingerprint locks for home entrance doors should be level 3, that is, the authenticity rejection rate is ≤0.1% and the false recognition rate is ≤0.001%. 1.
* Fingerprint anti-counterfeiting performance: The anti-counterfeiting performance of the fingerprint lock reflects whether the fingerprint lock can prevent the opening of fake fingerprints or non-living fingerprints and improve the security of the fingerprint lock. Fingerprint anti-counterfeiting performance is usually achieved using live detection technology, that is, the fingerprint lock can detect whether the fingerprint has biological characteristics, such as blood circulation, temperature, humidity, etc., thereby distinguishing true andfalse fingerprints. Liveness detection technology is mainly divided into two types: optical liveness detection and semiconductor liveness detection. Semiconductor liveness detection technology has higher anti-counterfeiting performance and can effectively prevent the opening of fake fingerprints, film fingerprints, plaster fingerprints, etc.2.
* Mechanical lock cylinder anti-theft performance: The mechanical lock core anti-theft performance of the fingerprint lock reflects whether the fingerprint lock can resist attacks by technical opening or violent opening, and protects the mechanical part of the fingerprint lock. The anti-theft performance of mechanical lock cylinders is usually measured by the anti-technical opening time and the anti-violence opening time. The anti-technical opening time refers to the maximum time that the mechanical lock core of the fingerprint lock can resist technological opening, such as tinfoil opening, master key opening, etc. The anti-violence opening time refers to the maximum time that the mechanical lock core of the fingerprint lock can resist violent opening, such as lock picking, sawing, collision, etc. At present, my country’s lock standards are divided into two levels: A-level and B-level. The internal structure of the A-level lock core is very simple. Within one minute of technical opening time, it can basically be opened by tin foil, and the mutual opening rate is extremely high. If the fingerprint lock If this type of lock cylinder is optional, the entire door will be useless. Therefore, the anti-theft level of the mechanical lock core of the fingerprint lock must reach level B before it can be used. Level B lock technology has an opening time of more than 5 minutes, and the tin foil cannot be opened at all. At present, there is also a “super B-level” lock on the market, which can prevent technical opening time of up to 270 minutes. It is basically helpless to open tinfoil and technical opening3.
* Anti-destruction performance of the smart lock body: The anti-destruction performance of the smart lock body of the fingerprint lock reflects whether the fingerprint lock can resist damage to the electronic part of the fingerprint lock caused by external forces or internal faults, and protects the smart part of the fingerprint lock. The anti-destruction performance of smart locks is usually achieved by anti-tamper alarm, anti-small black box, waterproof, dustproof, anti-static and other functions. That is, the fingerprint lock can be damaged by the outer panel, the circuit board is attacked, the ambient humidity or temperature is too high, and static electricity In case of interference or other situations, timely alarm or self-protection can be carried out to avoid the failure of the smart function of the fingerprint lock or data leakage4.
To sum up, the security indicators of fingerprint locks include fingerprint recognition performance, fingerprint anti-counterfeiting performance, mechanical lock core anti-theft performance and smart lock body anti-destruction performance. Different indicators reflect different security levels of fingerprint locks. Consumers When purchasing a fingerprint lock, you should consider these indicators comprehensively and choose a fingerprint lock product that meets your needs and budget.