A Friend of mine installed a CCTV system with Cameras strategically placed & an Internet site to record the scene& any movements,24hrs. a day.It paid off about a month later,when he Identified a neighbor attempting to break-in his back door!Along with the local Police,Neighborhood Watch,& local Newspaper,this guy was caught,his very protective family,Moved away & 2/3 of the neighborhood has, Now installed similar systems.He said the hardest thing to do was calling the police,as He so Badly wanted to Chop this guys hands off!His set-up cost was about $1400.00 total,2yrs. ago.Another tip is, If you have Vinyl or Aluminum windows/frames you can silicone magnets along the bottom inside.Many thieves are known to run magnets around windows,to check for Alarm systems,this could be a decent deterrent,& cheap too!Make sure you install a Lock on your Breaker panel,& Fortify the access screen/panel if your place is not complete slab foundation,many homes have been invaded from underneath,as sound does not carry to well there.Game cameras inside the house,work well,when hidden & you have a clue at the very least,of which is ALOT to go on.I bid you Good Luck with everything,& Am glad you are Free to write about all this.