I need to prevent my wife with Alzheimer's from leaving the house. I need door locks that require a key to enter AND exit the house. Where can I buy a double door lock with key-ways and levers or knobs on BOTH sides so a key is needed to open the door from both sides? I have checked all the big box hardware stores and they only have the double deadbolt types of locks (deadbolts don't have levers or knobs so they can't be used to pull open or close the door, only to lock it). No one else with this basic problem?