If you're looking to add extra security to your exterior doors, we recommend installing door guardian locks. These locks can easily be placed anywhere on your door. These locks can be placed up high if you have small children and want to make sure that they can not unlock the door and go out. You can put one up high and one down low if you would like. They are super sturdy and stronger than a deadbolt so you really only need one per door but to each their own. It's about your peace of mind and what makes you feel secure. Also, the great thing about these locks is that you do NOT need to drill another hole in your door to install them. They could actually be placed on any door even interior doors that you would like an extra lock on. They are available in many different colors to match your color preference. Call today for more information or to schedule to have increased security added to your doors.