Twenty Five years ago we were burgled through the back of the house, it turned out to be a taxi driver who, after collecting us from our home, (we were going to a wedding), phoned his partners and they burgled our home as they had a good idea the house would be empty. They were all caught. We installed black fancy wrought iron gates on all the downstairs back windows and door and they are still there to this day. I have security lights at the side, back and front of the house which come on if anyone is in the garden and a security camera that sits inside my house on the front window ledge so I can see who is at the door and when I am out it is on record so if anything does happen, I can watch the video. I don't have an alarm system because people totally ignore them as they are always going off, even when a spider crawls in front of the cameras in the house it sets them off.
I have locks on all my windows and the up to date locking system on my doors. There is nothing else I can do to ensure my safety but if I had a fall, the ambulance service would have to break down my door with a sledgehammer to get in so I think I am safe from unwanted intruders.
The experts do say that if you were locked out of your house, how would you get in, because if you cannot think of a way to get back into your house then burglars can't either without going to the trouble of kicking your door in or breaking windows which would disturb the street.
I feel extremely safe in my home but if anything happens when I am out, there is nothing else I can do about it so I ensure anything of sentimental value and all passwords are hidden way in a secure location, any other things can be replaced.
By the way, since we found out the burglars were a taxi driver and partners, we noticed more and more just how nosey taxi drivers were, asking how long we had lived in our house, do we have family still living with us, do I live alone, do I work, is my husband at home, even though my husband has died, I always wave to him, the taxi driver always asks me if my husband didn't want to come with me so I tell him, no, he is decorating. I am not saying all taxi drivers are criminals but I honestly do not know why they have to ask such personal questions, one even asked me how much my house was worth.