1, install access control system, no matter what material the door can be made of.

2. If it is an emergency door for fire escape (this door is commonly known as a fire door), you can also install access control. Usually, this access control does not allow anyone to access (or only a few people to access), and the door opening signal comes from panic button or a broken switch. In case of emergency, break the glass of the escape button and open the door to evacuate.