A home should be so well defended that it would be nearly impossible for anyone to enter uninvited. This should be your first and virtually last line of defense.
Outside doors that are kick proof for all practical purposes.
Use bump proof locks on your outer doors. Steel or solid wood doors. Reinforced door jamb. Metal door frame.
a wood post wedged between the bottom of your door and enormous bolts that have been fitted to screw into the concrete.
Dogs (if you don't mind them)
Alarm system with all windows and doors monitored, including being monitored for glass breakage.
Outdoor sensors that alert you when someone is outside on your property.
Burglar bars that are inside the windows instead of outside them.
Storm doors or burglar bar doors.
You do all that and there is very little chance anyone will try to come inside uninvited.
Outside doors that are kick proof for all practical purposes.
Use bump proof locks on your outer doors. Steel or solid wood doors. Reinforced door jamb. Metal door frame.
a wood post wedged between the bottom of your door and enormous bolts that have been fitted to screw into the concrete.
Dogs (if you don't mind them)
Alarm system with all windows and doors monitored, including being monitored for glass breakage.
Outdoor sensors that alert you when someone is outside on your property.
Burglar bars that are inside the windows instead of outside them.
Storm doors or burglar bar doors.
You do all that and there is very little chance anyone will try to come inside uninvited.