I got storage options ip cams, remote pan and tilt, night and day, cheap and damn good, got those inside and just looking for external one's, water proof, or might even take one of the ip cams apart and mod it.
My little doggie seems to work well to discourage entry though, staffie's seem to have a bit of an off putting look about them, thing is if anyone got in while no one was in he would probably just wee on their feet if they petted him. Only time he gets all toothy is if anyone raises a hand to anyone, especially the kids, thinks they are his pups im sure of it, but if we were in bed he would go all Cujo on a burglar.