Now many families have installed very smart fingerprint locks, but how can we judge the anti-theft performance of a fingerprint lock?

1. Look at the lock cylinder

From the principle of fingerprint lock, we can see that the essence of fingerprint lock is a mechanical lock.

Therefore, the fingerprint lock should be understood as a mechanical lock with a fingerprint unlocking function, rather than a fingerprint lock with a backup mechanical lock.

No matter how flamboyant the fingerprint or password technology is, as long as the lock cylinder has loopholes, it is not a good door lock.

In view of the lag of specifications, the overall technical requirements of fingerprint combination locks are lower than those of mechanical locks. Therefore, on the lock body and lock cylinder, it is best to refer to the specifications of mechanical locks. The front is the front, and safety is the most important thing.

The tin foil unlocking method for Class B locks can open the door in less than a minute

Second, look at the motor and clutch

This part is unique to the electronic lock. The motor drives the clutch to open the lock, so the quality of the clutch is also very important. Most importantly, this part must never be placed outside.

Otherwise, once the panel is removed, the core components are exposed naked to the thief, and the door can be opened by powering the motor, as simple as turning on the light. There are also clutches with unqualified designs that are not impact-resistant and can be opened by smashing them. Therefore, products from small factories must not be selected to avoid design defects.

3. Look at the fingerprint recognition system

The most basic part of the fingerprint lock is the fingerprint recognition element, which is divided into semiconductor and optical. The office punch card machine belongs to optical recognition, and the HOME button on the mobile phone uses semiconductor capacitive recognition technology.

According to the regulations in the standard, the fingerprint misrecognition rate should be less than 1 in 100,000.

But the functions of smart locks are more and more, in addition to fingerprint recognition, there are various functions such as passwords, IC cards, and app smart remote control.

Any system will have loopholes. The more functions, the more loopholes. In addition, the current fingerprint combination lock is not a mainstream product, and the industry standards are lagging behind. Everything depends on the self-discipline of manufacturers. If you really want to go deeper, the fingerprint may not be recognized, the password may be leaked, the IC card may be copied, the app and Bluetooth may be hacked, and the mechanical lock may be pried. There are even IC card identification modules and loopholes found, which can make a universal card and open the door of other people's homes. . .

Therefore, keep only the features you need, that is, reduce vulnerabilities.

The optical fingerprint recognition system may be fooled by the "Punch Artifact - Fingerprint" in the picture above. The semiconductor fingerprint recognition system is said to only recognize living fingerprints and has high anti-theft performance.

Fourth, look at the overall quality

When we buy mechanical door locks, in addition to looking at the level of the lock cylinder, we will also require heaven and earth locks (the upper and lower latches of the heaven and earth locks lock the upper door frame and the lower floor respectively), automatic anti-lock function, whether the lock is easy to be removed outside, etc. .

The industry specifications of fingerprint locks are relatively lagging behind, and different customers have different requirements for the anti-theft performance of fingerprint locks. There are many high-value fingerprint locks from foreign big brands on the market, but the national conditions are different, and the norms of security responsibilities are also different. Therefore, you still need to keep your eyes open to choose locks that meet your own requirements.

Some high-value imported locks are actually not suitable for housekeeping door locks.