Is the "cat's eye" of the security door a loophole?

It is the practice of many unlocking companies to use cat's eyes to unlock the door. Does this mean that the "cat's eyes" on the door are home security loopholes? Some anti-cat-eye tools can also be used to spy on indoor conditions. So you have to be more careful when you install cat's eyes! Method 1: choose a small cat's eye or a cat's eye security door with a slot; The cat's eye of the security door is different in size, the smaller cat's eye is difficult to take off, and it is also difficult for the crime tools to reach in from this place; If you like a bigger cat's eye, you must make sure that there is a slot on the back of the cat's eye. If there is a slot, it will be difficult for thieves to remove the cat's eye by rotating it. Method 2: Double-lock security door; Double-lock anti-theft door has two locks on the hollow door, including the main lock and the auxiliary lock. The auxiliary lock is generally arranged above the main lock, and both locks must be opened before the anti-theft door can be opened. The cat-eye door-opening tool can only open one lock at a time, so this door-opening tool is completely ineffective when both locks are locked at the same time. However, although it is very safe, this double-lock security door is not so convenient in the use process. However, in the face of the safety of life and property, this is also a piece of cake. Method 3: a lockable security lock; From the aspect of locks, one of the anti-theft door locks on the market is a mechanical lock that can be locked. Although it is troublesome, it is safer to lock the door completely by rotating it. Another kind of lock is the "quick lock" that young friends prefer. You can lock the door by pulling it after going out. Although it is convenient, it is still easier for thieves to open the door outside through the "cat's eye lock". Therefore, after pulling up, it is better to lock it with the key, so that the thief can't open the door even if he puts the "mechanical arm" into the cat's eye. Method 4: Anti-cat-eye device; The so-called "anti-cat's eye" device has appeared in the market, and accordingly there is an artifact like cat's eye protector. The whole structure of cat's eye protector includes protector cover ring, baffle, screw hole, nut and bolt. There is a round hole with the same inner diameter as the cat's eye in the center of the cover ring, and a convex ring around the round hole. There are five screw holes in the cover ring. The round hole at one end of the baffle is placed in the screw hole on the left side of the cover ring, and a nut is filled in the top and bottom, and then it is fixed by bolts. The hook buckle at the other end of the baffle is put into the gap between the bolt and the nut of the screw hole on the right side of the cover ring. The baffle can rotate upwards to ensure the normal use of the cat's eye. At ordinary times, the cat's eye can be sealed with the baffle. People rely on clothes and horses to lean on saddles, and cat's eyes wear this protective cover, which is even more majestic. No one can think about it. Method 5: replace the traditional cat's eye with electronic cat's eye; Electronic cat's eye, also called visual visitor system, is widely used in high-end hotels in China at present, which is a revolution to the traditional optical cat's eye. It mainly solves the problems that the traditional cat's eye needs to be observed close to the portal, which is inconvenient to use and has a small viewing angle. The advantage of electronic cat's eye is to provide users with a wider viewing angle. Instead, users can freely observe more scenes around visitors without missing any details. The electronic cat's eye avoids the current anti-cat's eye device and can protect the privacy of users. In addition, there is a card slot in it, which can't be opened when the mechanical arm is used to unlock the lock, because the card slot is nailed to it, so it is especially anti-theft. Compared with other anti-theft methods, the cost of this method is much higher, but it is a good choice for people who pursue quality life.