Is it safe to lock the key at home?

It is safe to lock the door and insert the key from the inside, so that it is impossible to insert the keyhole to open the door from the outside. This is a safety measure according to the production principle and use method of the lock, and also a form of protection to prevent the door from opening from the outside.

The really safe way to lock the key in the house is to turn the key twice after closing the door and turn the small switch vertically at the same time. Some locks have a small tongue, which is an extra insurance. It acts like a bolt. Some locks may not be available. This complete locking can only be carried out indoors, which is relatively safe.

In addition, there are two cases where the key is locked in the house. One is to close the door directly. In this case, press the handle inside to open it, and turn the key 90 outside to open it. Another is to turn the key twice inside and open it twice from the outside on the basis of closing the door. In both cases, you can open the door with a key, which is not safe.