Climb Resistant Paint
There are lot of really technologically advanced devices that you can use to protect your home from burglary, but sometimes simple solutions can be more effective.
One of the easiest ways for a thief to break into your home is by climbing over your back fence and then breaking in through the relatively unguarded back door or window. To stop this you need to make your walls difficult to climb, which is where climb resistant paint comes to the fore.
The properties of climb resistant paint make it very difficult to find purchase, so that so long as the wall in question isn’t so small that the burglar can’t easily jump over the wall they won’t be able to get over it at all, so long as they don’t have a ladder anyway.