Add a peephole
A door peephole is only $25 a piece, and it’s the hidden gem of home security. It will let you have a wide-angle view of your potential visitors so that you can decide whether to let them in or not.
Install a safety door
Screen doors, just like glass doors, are more efficient than you might have thought. They can be cut or punctured for easier access. The thing is, every screen door requires a safety door to go with it. This can act as a safety measure as well, as it can be an extra layer between any thief and the screen.