I thought of the same idea once. but then i thought ok lets say you see the theif or robber on your screen or your camera rings but then what. who will go and stop them. who would risk to fight with them? Police would take hours to respond and mean while the robbers will be gone by that time. Instead, a motion sensor with huge alarm sound would be nice. lets say you lock you home before you go to bed, you will turn on the motion sensor. will be turned on before they even try to open the locks. the big alarm would make them run or you can call your friends and families. so what i am trying to say is, we need something that makes them run or we can catch them before they even try to open the doors or windows. we don't want to care what's going inside because once they are in there, they will make it out anyway since our respond time will be much higher than the time the robbers need to finish their job.