With people's living standards getting higher and higher, they pay more and more attention to the safety at home, so it is necessary to install cat's eyes at the entrance door. Why not recommend installing a cat's eye at the entrance door? I read a news before that the cat's eye of the security door has become a new channel for thieves to steal, that is, pry the cat's eye open, and then put a slender tool into the room from the cat's eye hole to open the door lock from the inside, thus entering the room to steal.
At present, it is not impossible to punch holes and install cat's eyes in security doors, but this will destroy the structure of security doors, weaken the firmness of security doors, and even lose the significance of security. In fact, many security doors on the market have cat eyes, and having cat eyes does not mean that they are not anti-theft. However, you should pay attention to the size and card slot when choosing the security door.
Origin of cat's eye
The cat's eye was invented by Percy Shaw, an Englishman. He came up with this idea by chance. Once when he was driving through a mountain road at night, he was caught in the fog and couldn't see the road ahead clearly. He saw two bright things. He was disturbed by the light. He opened his eyes wide and found it was a lovely kitten.
On the way back, he was thinking about how to avoid this dangerous bend, but it was unrealistic to install all the lights, and the effect was not good, so he thought of the light from the cat's eye, which he thought could reflect light. When he got home, he asked the cat to study it.
He found that the cat's eye is a very smooth sphere, which can reflect light. Knowing this principle, he found a substitute glass for cat's eye, a round and smooth glass body. He thought about how to put it on the road to ensure the lighting of the road. Finally, in 1933, he invented the cat's eye and filed a patent application. The original cat's eye is used for roads, which is conducive to driving at night to identify roads.