Iron security doors and gates provide a barrier that most criminals are not willing to work to cross. The concept is to create a decorative barrier over soft targets like windows and doors, making it far more difficult to kick or break your way in.
The glass of a window can easily be broken to give access, and wooden doors provide only slightly more difficult. Even with deadbolts installed, most doors will break at the hinges with only a simple kick, allowing access quickly and conveniently.
Iron security doors in Perth are mounted in front of the door or windows, which creates a situation where a kick will not allow entry.
A thief would have to cut through iron to get in, and almost no criminal is going to spend the time to do this kind of thing. Also, it would make a tremendous amount of noise and generate unwanted attention to work on getting through an iron door, so most criminals are simply going to move on to the next house over.
The idea behind security doors is not to reduce the crime rate in general, it is to move the criminal activities away from your home in particular. Only iron security doors and gates will accomplish this task effectively.
When you start taking the security and protection of your family seriously, stop relying on cameras and start relying on iron to prevent crime. Nothing is tougher, and it looks beautiful too.