I think motion detectors are available in Qatar so if you are alone in the house and want  to hear if someone comes in that might help. Many of us use those poles in the sliding doors to keep them from being pried open. I too believe its usually the security guards as they know your schedule. My friend was robbed twice 10 years ago in the Midmac compound until she got a dog and it never happened again!!  They are afraid of dogs.