First of all, smart locks help users get rid of the fear of being dominated by keys. For traditional door locks, the key is the only opening tool. This uniqueness brings many inconveniences to the user-such as forgetting to bring the key, losing the key, forgetting to lock the door and not locking the door, and friends/relatives suddenly visit without a key and cannot enter. Doors and so on… In contrast, smart door locks have multiple user features such as fingerprint unlocking, password unlocking, and face recognition unlocking. It can also realize remote distribution of unlocking passwords/temporary passwords, and real-time access to the door lock status, allowing users Get rid of the shackles of the key.

Second, the structure of the smart door lock is complex, which reduces the risk of burglary caused by “door sliding door picking”. Many users turn their heads and place an order for smart door locks after witnessing professional unlockers opening their mechanical door locks within one minute. Although traditional door locks have various styles such as ordinary concealed locks, sliding door locks, and cross-shaped door concealed locks, their lock cores are all round bodies and the unlocking principle is exactly the same, so the safety performance is low. On the other hand, smart door locks, with 51 series single-chip microcomputers as the core and corresponding hardware circuits, are complex in structure, and the lock cylinder is sealed in the lock body, which has a violent removal alarm function to improve safety.

Third, the smart door lock can be linked with other smart terminals in the house to enrich the smart home scene experience. With the rapid development of the Internet of Things, AI, big data, etc., the smart home industry has ushered in a large-scale and mature landing, and the scene intelligence of multi-terminal linkage is also rapidly popularized. The entrance door as the entrance of the home scene will undoubtedly become the intelligent control Trigger point. Imagine that when you open the door of your home, the entrance/living room lights will automatically turn on, the water heater will automatically turn on, and the curtains will automatically close… This kind of smart home system linkage cannot be completed by traditional mechanical door locks.

Fourth, smart door locks change security protection from passive to active. Traditional door locks are helpless in the event of violence, theft, etc., but many smart door locks have built-in cameras that can recognize suspicious people in front of the door and send photos to the user’s mobile APP. Some smart door locks also have voice broadcast functions and can speak. The “suspect” persuaded him to leave, realized active safety protection, and comprehensively upgraded the security of door locks.

Differentiated products “lock” invincible

With the increase in user demand, the scale of the smart door lock market is also on the rise. Giants from home appliances, IT, communications, security and other industries have poured into the smart door lock track, but the industry oligarchy has not yet formed. Users are often tired of understanding the dazzling array of door locks. Only by creating differentiated products in the price battle of homogenized products can companies stand out in the smart door lock market. At present, the focus of major brands is mainly Unlocking method and connection technology.

In terms of unlocking methods, the smart door locks currently on the market mainly include five methods: induction lock, password recognition, fingerprint recognition, face recognition, and iris recognition:

Inductive locks mainly rely on magnetic stripe cards, IC cards, TM cards, radio frequency cards, etc. to be unlocked through microcomputer chip induction, which has low cost, low threshold for use, and is not easy to be cracked. However, cards are similar to keys and still have the risk of loss and theft. Therefore, pure induction door locks are not widely used in home scenes, mainly in hotels, apartments and other places;

Password locks are low in cost and widely used. They can be divided into electronic passwords and virtual passwords. When the user password is at risk of leakage, you can enter any number outside the password sequence as a virtual password before or after the registered password. Confusing audiovisual and preventing password leakage;

Fingerprint recognition refers to the use of fingerprints for identity authentication, which is more convenient than mobile phone fingerprint unlocking. The biggest risk is that once the fingerprint, a biological feature is cracked, it will be cracked for life;

The face recognition door lock is to detect and track the features of the human face through living body detection and face recognition algorithms, and compare it with the face information stored in the door lock to complete the verification. Currently, it has been iterated to 3D face recognition technology, which is not easy Affected by factors such as posture, expression, light, etc., it can also prevent attacks such as photos, videos, and headgear, with high accuracy and strong security;

The iris recognition door lock is based on the iris in the eye for identity recognition. It has a low rate of misrecognition, is difficult to forge, and is difficult to copy. It was once known as the most accurate and safe biometric identification method.

Mainstream products generally integrate the above-mentioned 2-3 unlocking methods for users to choose, but all major manufacturers without exception retain the spare key unlocking function to prevent users from being unable to open the door when the smart lock is powered off or malfunctions.

In terms of connection technology, currently there are mainly WiFi, Bluetooth, ZigBee, NB-IoT, etc.:

WiFi: Install a WiFi module in the door lock to use the WiFi in the house to access the Internet, so as to realize the device’s network access and remote control, etc. However, the WiFi signal strength at the entrance cannot be guaranteed, and the device is often offline. In addition, with The smart lock with video or WiFi transmission function has high power consumption and poor battery life, which may cause power failure;

Bluetooth: Based on low-cost short-range wireless connection, it can establish a connection for fixed and mobile devices, which can realize “connect and use”, low cost, small size, and good short-range communication security. However, it is difficult for the smart door lock connected via Bluetooth to directly connect to the network, and users cannot monitor the status of the door lock in real time and cannot operate remotely;

ZigBee: A short-distance, low-rate wireless network technology that has the advantages of low power consumption, large network capacity, short delay, and strong security, but it also requires a separate gateway to realize device networking;

NB-IoT: Narrowband Internet of Things, with extremely low power consumption, and battery life of up to three to five years. In addition, it can continuously transmit data to and from the server through the base station to help users obtain any status information of the lock in real time. NB-IoT smart locks have developed rapidly in recent years due to their low cost, low power consumption, and wide coverage, and have gradually become the mainstream technology.

Compared with traditional smart locks, NB-IoT smart locks have the advantages of deep coverage, a large number of connections, fast data transmission speed, ultra-low power consumption, strong security, and strong stability. Even in the basement or closed corridor, its use The signal strength can still guarantee data transmission.